CN110685644B - Pumping unit operation monitoring device and fault early warning system - Google Patents
Pumping unit operation monitoring device and fault early warning system Download PDFInfo
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- CN110685644B CN110685644B CN201910881944.7A CN201910881944A CN110685644B CN 110685644 B CN110685644 B CN 110685644B CN 201910881944 A CN201910881944 A CN 201910881944A CN 110685644 B CN110685644 B CN 110685644B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The invention provides an oil pumping unit operation monitoring device and a fault early warning system, which comprise: the method comprises the following steps that a hair braid elongation monitoring device monitors the elongation of a hair braid of the pumping unit; the crank pin locking nut monitoring device is used for monitoring the displacement variation of the crank pin nut; the middle shaft and tail shaft bearing vibration monitoring device is used for monitoring the vibration quantity of a middle shaft and a tail shaft of the pumping unit; the speed monitoring device of the reduction gearbox belt pulley is used for monitoring the speed of the reduction gearbox belt pulley of the pumping unit; monitoring the displacement of the main shaft of the reduction gearbox; the control device analyzes the monitoring data and sends an alarm instruction to the alarm device and the display device when judging that an abnormal condition occurs; the alarm device sends out an alarm signal according to the alarm instruction; the display device is used for displaying the device name and monitoring data which need to be alarmed for the user to view. The invention can find whether each component has faults in time, alarm in time to remind a user, and remove the faults by adopting corresponding measures, thereby greatly improving the safety of the oil pumping unit in operation.
Description
Technical Field
The invention relates to the technical field of oil exploitation, in particular to an oil pumping unit operation monitoring device and a fault early warning system.
Background
The beam-pumping unit is one of the main production equipments in the process of oil exploitation. When the pumping unit is used for a long time, the running state of equipment is changed continuously, and equipment shutdown caused by equipment hidden danger happens occasionally, so that the production and startup time rate is influenced.
At present, the operation of pumping unit equipment still relies on the mode of manual tour, through visual inspection, relies on experience to confirm the running state of equipment. This approach has the following problems: the method of real-time quantitative monitoring and failure prejudgment is lacked, so that the long-time safe operation of the pumping unit cannot be completely guaranteed, and the hidden trouble of unplanned shutdown of the pumping unit due to failure exists.
Disclosure of Invention
The object of the present invention is to solve at least one of the technical drawbacks mentioned.
Therefore, the invention aims to provide an oil pumping unit operation monitoring device and a fault early warning system.
In order to achieve the above object, an embodiment of the present invention provides an operation monitoring device and a fault early warning system for an oil pumping unit, including:
a hair pigtail elongation monitoring device, a crank pin lock nut monitoring device, a middle shaft and tail shaft bearing vibration monitoring device, a reduction box pulley rotating speed monitoring device, a wireless communication device, a control device, an alarm device and a display device, wherein,
the device for monitoring the elongation of the hair braid is arranged at the position of a rope hanger of the oil pumping unit and is used for monitoring the elongation of the hair braid of the oil pumping unit;
the crank pin locking nut monitoring devices are arranged on the left side and the right side of the inner side of a crank of the pumping unit and are used for monitoring displacement variation of a crank pin nut;
the middle shaft and tail shaft bearing vibration monitoring device comprises: the central shaft bearing monitoring unit is arranged on the left side and the right side of a central shaft of the pumping unit and used for monitoring the vibration quantity of the central shaft of the pumping unit; the tail shaft bearing monitoring units are arranged on the left side and the right side of the tail shaft of the pumping unit and are used for monitoring the vibration quantity of the middle shaft and the tail shaft of the pumping unit;
the speed monitoring device for the belt pulley of the reduction gearbox is arranged at the belt pulley of the input shaft of the reduction gearbox of the pumping unit and used for monitoring the speed of the belt pulley of the reduction gearbox of the pumping unit;
the wireless communication device is used for receiving monitoring data from the hair pigtail elongation monitoring device, the crank pin locknut monitoring device, the middle shaft and tail shaft bearing vibration monitoring device and the reduction box belt pulley rotating speed monitoring device and sending the monitoring data to the control device through a wireless gateway;
the control device analyzes the monitoring data, and sends out an alarm instruction to the alarm device and the display device when judging that any one of the following conditions occurs:
(1) the elongation monitored by the braid elongation monitoring device is in an abnormal state;
(2) the displacement variation monitored by the crank pin locknut monitoring device exceeds a preset displacement threshold;
(3) the vibration quantity monitored by the middle shaft and tail shaft bearing vibration monitoring device exceeds a preset vibration threshold;
(4) the rotating speed detected by the speed reduction box belt pulley rotating speed monitoring device is lower than a preset rotating speed threshold;
the alarm device sends out an alarm signal according to the alarm instruction;
the display device is used for displaying the device name and monitoring data which need to be alarmed so as to be viewed by a user.
Further, when the control device judges that the elongation monitored by the braid elongation monitoring device exceeds a preset upper limit value, pre-alarming is to be a wax card or a pump card during ascending; when the elongation is reduced, the wax card or the pump card is pre-alarmed to be in a descending state.
Further, when the control device judges that the displacement variation monitored by the crank pin lock nut monitoring device exceeds a preset displacement threshold value, the nut is judged to be loosened.
Further, when the control device judges that the vibration quantity monitored by the middle shaft and tail shaft bearing vibration monitoring devices exceeds a preset vibration threshold value, the control device judges that the bearings of the middle shaft or the tail shaft have faults.
Further, when the control device judges that the rotating speed monitored by the reduction gearbox belt pulley rotating speed monitoring device is lower than a preset rotating speed threshold value, the control device judges that the problems of belt slippage, overlarge load, pump blockage or wax blockage occur.
Further, the braid elongation monitoring device adopts a pull rope displacement sensor; the crank pin locking nut monitoring device adopts an LVDT displacement sensor; the middle shaft and tail shaft bearing vibration monitoring device adopts an eddy current type vibration sensor; the speed monitoring device of the belt pulley of the reduction gearbox adopts an angle sensor or a speed sensor.
Further, still include: the vibration monitoring device of the reduction gearbox is used for monitoring the vibration quantity of the reduction gearbox, sending the vibration quantity to the wireless communication device, further transmitting the vibration quantity to the control device through the wireless communication device, judging whether the bearing of the reduction gearbox is in fault or the screw of the reduction gearbox is loosened when the control device judges that the vibration of the reduction gearbox exceeds a preset vibration quantity threshold value of the reduction gearbox, and controlling the alarm device to send an alarm signal.
Further, still include: the monitoring device of the vibration quantity of the pumping unit base is installed on the left side and the right side of the front end of the pumping unit base, is used for monitoring the vibration quantity of the pumping unit base and sending the vibration quantity to the wireless communication device, the wireless communication device further forwards the vibration quantity to the control device, when the control device judges that the vibration quantity of the pumping unit base exceeds a preset vibration quantity threshold value of the pumping unit base, the pumping unit base is judged to be unstable, and the control alarm device sends an alarm signal.
Further, still include: the device for monitoring the shaft serial quantity of the main shaft of the reduction gearbox is arranged between a belt pulley of the pumping unit and a shell of the reduction gearbox, is used for monitoring the shaft serial quantity of the main shaft of the reduction gearbox, sending the shaft serial quantity to the wireless communication device, further forwarding the shaft serial quantity to the control device through the wireless communication device, judging that the main shaft is in shaft serial when the control device judges that the shaft serial quantity of the main shaft of the reduction gearbox exceeds a preset shaft serial quantity threshold value, and controlling the alarm device to send an alarm signal.
Further, still include: the video monitoring device is used for monitoring video signals of the Christmas tree packing box and sending the video signals to the wireless communication device, the wireless communication device further forwards the video signals to the control device, when the control device receives the video signals, the video signals are transmitted to the display device to judge whether the packing box leaks oil or not through video images, and when the Christmas tree packing box leaks, the alarm device is controlled to send out alarm signals.
According to the pumping unit operation monitoring device and the fault early warning system provided by the embodiment of the invention, the operation monitoring device is used for monitoring the operation state of the main parts of the pumping unit, so that whether each part has a fault can be found in time, an alarm is given in time to remind a user, and corresponding measures are adopted for removing the fault, so that the safety of the pumping unit in operation can be greatly improved, the workload of operation management personnel is reduced, the operation safety is improved, and the hidden danger of unplanned shutdown of the pumping unit caused by the fault is avoided.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a structural diagram of an oil pumping unit operation monitoring device and a fault early warning system according to an embodiment of the invention.
Reference numerals:
the device comprises a pigtail elongation monitoring device-1, a crank pin locking nut monitoring device-2, a middle shaft and tail shaft bearing vibration monitoring device-3, a reduction gearbox pulley rotating speed monitoring device-4, a wireless communication device-5, a control device-6, an alarm device-7, a display device-8, a reduction gearbox vibration monitoring device-9, a pumping unit base vibration amount monitoring device-10, a reduction gearbox main shaft tandem shaft amount monitoring device-11 and a video monitoring device-12.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, the operation monitoring device and the fault early warning system of the pumping unit according to the embodiment of the present invention include: a hair pigtail elongation monitoring device 1, a crank pin lock nut monitoring device 2, a middle shaft and tail shaft bearing vibration monitoring device 3, a reduction box belt pulley rotating speed monitoring device 4, a wireless communication device 5, a control device 6, an alarm device 7 and a display device 8,
specifically, the hair pigtail elongation monitoring device 1 is located on the position of a rope hanger of the pumping unit, and the other end of the hair pigtail is installed at the position of a horsehead top hair pigtail hanging part and used for monitoring the elongation of the hair pigtail of the pumping unit.
In the embodiment of the invention, the hair braid elongation monitoring device 1 adopts a pull rope displacement sensor, which is also called a pull rope sensor, a pull rope electronic ruler and a pull rope encoder. The pull rope displacement sensor is a delicate structure of the linear displacement sensor, fully combines the advantages of an angle sensor and the linear displacement sensor, and is a sensor with small installation size, compact structure, large measurement stroke and high precision, and the stroke is different from hundreds of millimeters to dozens of meters.
In the embodiment of the invention, the plait elongation monitoring device 1 adopts a pull rope displacement sensor with the model number MT 60. The sensor belongs to a miniature pull wire (rope) displacement sensor, is used for recording the linear distance of the measurement length of 0-500 mm, the output of an analog quantity type and a digital quantity type, has a standardized interface, can be firm and durable, and is particularly suitable for occasions with short distance and high resolution, and is mainly characterized in that: the installation is convenient, a standby installation reference surface is arranged, and various selections are made according to needs; the installation space is small, and the installation difficulty is low; no guiding is required. The mechanical tolerance does not influence the measurement precision; the hydraulic cylinder is widely applied to linear guide rail systems, hydraulic cylinder systems, telescopic systems, storage position positioning and pressure machinery. Relevant dimension measurement and position control of paper making machinery, textile machinery, sheet metal machinery, printing machinery, horizontal control instruments, construction machinery and the like; can be externally connected with acquisition systems such as a PLC secondary instrument, a singlechip and the like.
Crank pin lock nut monitoring devices 2 include two, install respectively in the inboard left side of crank and the right side of beam-pumping unit, the inboard crank pin lock nut department of crank promptly for monitor crank pin nut's displacement variation. Wherein, crank pin lock nut monitoring devices 2 adopts LVDT displacement sensor, and the survey nut is not become flexible, realizes the not flexible monitoring of screw cap. The crank pin locking nut monitoring device 2 can monitor the locking nuts of the left crank pin and the right crank pin of the pumping unit at the same time.
In an embodiment of the present invention, the crank pin lock nut monitoring device 2 has a displacement sensor model BS 24.
The middle shaft and tail shaft bearing vibration monitoring device 3 comprises: the device comprises a middle shaft bearing monitoring unit and a tail shaft bearing monitoring unit, wherein the middle shaft bearing monitoring unit is installed on the left side and the right side of a middle shaft of the pumping unit and used for monitoring the vibration quantity of the middle shaft of the pumping unit; the tail shaft bearing monitoring unit is arranged on the left side and the right side of a tail shaft of the pumping unit and used for monitoring the vibration quantity of a middle shaft and the tail shaft of the pumping unit. Wherein, the middle shaft and tail shaft bearing vibration monitoring device 3 adopts an eddy current type vibration sensor.
The electric eddy current type vibration sensor is of the type SD-051/1/105/10/0/0; the manufacturing process comprises the steps of integration; the output signal is analog; the material is metal; physical properties of the material, conductor; the crystal structure of the material is single crystal; protection grade IP 67; linearity of 100% F.S; 100% of hysteresis F.S; repeatability of 120% F.S; the sensitivity is 100; resolution 20 x 30.
The speed monitoring device 4 for the belt pulley of the reduction gearbox is arranged at the belt pulley of the input shaft of the reduction gearbox of the pumping unit and used for monitoring the speed of the belt pulley of the reduction gearbox of the pumping unit. In the embodiment of the invention, the reduction gearbox belt pulley rotating speed monitoring device 4 adopts an angle sensor or a speed sensor. The increment of displacement per unit time is the velocity. The speed includes a linear speed and an angular speed, and a linear speed sensor and an angular speed sensor, which are collectively called speed sensors, correspond to the linear speed and the angular speed. And the position should use an angular velocity sensor, such as: the resolution is 0.1; brand new, high-class speed material stainless steel; reproducibility 0.02 (% F.S.); lag 0.2 (% F.S.); the integrated drift of the manufacturing process is 0.01; a material physical property conductor; protection class IP 56; linearity 0.3 (% F.S.); processing and customizing; outputting a signal analog type; a material crystal structure single crystal; the sensitivity is 0.2 model QZKT-40H-600-C10-30E.
For example, the reduction gearbox pulley speed monitoring device 4 adopts a high-precision digital angle sensor with the model of LAT216T, and has the following parameters: the precision is 0.1 degrees, and the resolution is 0.015 degrees; the range is 0-360 degrees; inputting wide voltage into DC 9-36V; the output interfaces RS232, TTL, RS485 and MODBUS are optional; high shock resistance >20000 g; working at-40-85 ℃ under wide temperature range; IP66 protection class (customizable); the sampling rate is 1 khz.
The wireless communication device 5 is used for receiving monitoring data from the hair pigtail elongation monitoring device 1, the crank pin lock nut monitoring device 2, the middle shaft and tail shaft bearing vibration monitoring device 3 and the reduction gearbox belt pulley rotating speed monitoring device 4, and sending the monitoring data to the control device 6 through a wireless gateway.
Specifically, the analog signals generated by the sensors of the monitoring devices are transmitted to the wireless communication device 5, then transmitted to the wireless gateway by the wireless communication device 5, and then wirelessly transmitted to a terminal or a notebook computer, a mobile phone tablet computer, and the like. Namely, the sensor for monitoring the position outputs a signal to the wireless transmission sensor, and the output signal of the sensor adopts a current output signal of 4-20 mA. The wireless transmission device adopts a CZ80DTD analog wireless transmission device. And realizing the wireless transmission at a longer distance from the wireless transmission device to the intermediate gateway. Or directly transmitting to a terminal or a notebook computer and a mobile phone or a tablet computer.
The control device 6 analyzes the monitoring data, and sends an alarm instruction to the alarm device 7 and the display device 8 when judging that any one of the following conditions occurs:
(1) the elongation monitored by the hair braid elongation monitoring device 1 is in an abnormal state;
when the control device 6 judges that the elongation monitored by the braided braid elongation monitoring device 1 exceeds a preset upper limit value, pre-alarming is wax card or pump card during ascending; when the elongation is reduced, the wax card or the pump card is pre-alarmed to be in a descending state.
Specifically, the hair braid is mainly used for monitoring the deformation of the length, and the elongation is the elastic deformation under the normal load condition and also comprises the deformation caused by temperature change. If the average temperature in the spring and autumn is taken as a reference, the total elongation in winter is smaller, and the total elongation in summer is larger.
The fault early warning system of the hair braid elongation monitoring device 1 is a load fluctuation pre-warning system, and mainly judges the load change of the oil pumping unit by combining the hair braid elongation of the oil pumping unit, when the value exceeds a preset upper limit value, the first condition is proved to be elongation excess, and pre-warning is an uplink wax card or pump card. The second condition is that the elongation is reduced, and the pre-alarm is wax card or pump card when the vehicle is down. According to the alarm condition, the monitoring personnel can conveniently dispose the fault in time.
(2) The displacement variation monitored by the crank pin locknut monitoring device 2 exceeds a preset displacement threshold;
displacement change is monitored through an LVDT displacement sensor, and when the displacement change amount monitored by the crank pin locknut monitoring device 2 is judged to exceed a preset displacement threshold value, the control device 6 judges that the nut is loosened. Wherein the amount of loosening of the nut can be measured by relative displacement.
(3) The vibration quantity monitored by the middle shaft and tail shaft bearing vibration monitoring device 3 exceeds a preset vibration threshold;
when the control device 6 judges that the vibration quantity monitored by the middle shaft and tail shaft bearing vibration monitoring device 3 exceeds a preset vibration threshold value, the bearing fault of the middle shaft or the tail shaft is judged.
The vibration quantity of the shaft is measured by the middle shaft and the tail shaft, the vibration value is determined according to the rotating speed, and the vibration quantity exceeds the standard when the value exceeds the numerical value. The operation conditions of the middle shaft and the tail shaft are judged by monitoring the change of the vibration amplitude through the eddy current displacement sensor, and the bearing fault of the middle shaft and the tail shaft is indicated when the amplitude exceeds a set value.
(4) The rotating speed detected by the reduction gearbox belt pulley rotating speed monitoring device 4 is lower than a preset rotating speed threshold;
in the embodiment of the invention, the reduction gearbox belt pulley rotating speed monitoring device 4 adopts a rotating speed sensor to monitor whether the belt pulley slips or not, and monitors whether the belt slips or not by monitoring the rotating speed of the reduction gearbox belt pulley, so that the phenomenon that the belt slips to cause overheating damage and the pumping unit is stopped because the belt is broken is prevented.
The rotating speed of the belt pulley of the reduction gearbox can be monitored by monitoring a rotating speed value. The speed ratio is a constant value after the diameter of the belt pulley of the reduction box of the belt pulley of the motor is determined by considering the transmission efficiency. And if the value is lower than the fixed value within a certain range, giving an alarm prompt, wherein possible problems comprise: the belt slips and is overloaded, including pump jamming, wax jamming, etc. The degree of tightness of a belt of the pumping unit or whether the rotation speed reduction caused by overload occurs during the operation of the pumping unit is judged according to the fluctuation amount of the rotation speed. The monitoring and determination may be comprehensively considered by combining the deformation amount of the hair braid. Due to the limitation of the installation and use conditions of the oil pumping unit, the actual deformation and vibration amount of the oil pumping unit are larger than those of equipment with a fixed foundation. In the actual test process, basic values are set according to the specific conditions of each device, and adjustment is needed to be made in time according to the change conditions.
When the control device 6 judges that the rotating speed monitored by the speed reduction box pulley rotating speed monitoring device 4 is lower than a preset rotating speed threshold value, the problems of belt slipping, overlarge load, pump blocking or wax blocking are judged.
The alarm device 7 sends an alarm signal according to an alarm command from the control device 6. Wherein, the alarm signal can be a sound signal or a photoelectric signal.
The display device 8 is used for displaying the device name and monitoring data which need to be alarmed for the user to check, so that the user can check the device name, fault data and fault content which have faults in real time, and personnel can be arranged in time to carry out maintenance and troubleshooting.
In addition, the pumping unit operation monitoring device and the fault early warning system of the embodiment of the invention further comprise: the reduction gearbox vibration monitoring device 9 is used for monitoring the vibration quantity of the reduction gearbox, sending the vibration quantity to the wireless communication device 5, further transmitting the vibration quantity to the control device 6 through the wireless communication device 5, judging that a reduction gearbox bearing fault or a reduction gearbox screw is loosened when the control device 6 judges that the vibration of the reduction gearbox exceeds a preset reduction gearbox vibration quantity threshold value, and controlling the alarm device 7 to send an alarm signal.
In one embodiment of the invention, the rotation sensor adopted by the reduction gearbox vibration monitoring device is arranged at the output shaft of the reduction gearbox, and one or two sides of the rotation sensor can be arranged at the center.
In the embodiment of the present invention, the reduction box vibration monitoring device 9 uses an eddy current vibration sensor to monitor the vibration amount. For example, the eddy current vibration sensor employs the following:
model number SD-051/1/105/10/0/0; the manufacturing process comprises the steps of integration; the output signal is analog; the material is metal; physical properties of the material, conductor; the crystal structure of the material is single crystal; protection grade IP 67; linearity of 100% F.S; 100% of hysteresis F.S; repeatability of 120% F.S; the sensitivity is 100; resolution 20 x 30.
The operation monitoring device and the fault early warning system of the pumping unit of the embodiment of the invention also comprise: monitoring devices 10 of beam-pumping unit base vibration volume installs in the left side and the right side of beam-pumping unit base front end, or the left and right sides of front and back end all can for the vibration volume of monitoring beam-pumping unit base, and send to wireless communication device 5, further forward to controlling means 6 by wireless communication device 5, when controlling means 6 judges the vibration volume of beam-pumping unit base and surpasss and predetermine beam-pumping unit base vibration volume threshold value, judge that the beam-pumping unit base is unstable, control alarm device 7 sends alarm signal.
In the embodiment of the invention, the monitoring device 7 for the vibration quantity of the pumping unit base adopts the displacement sensor, and the stability of the pumping unit base is monitored by measuring the change of the amplitude of the pumping unit in the process of ascending and descending through the displacement sensor, so that the equipment management personnel can conveniently timely monitor the tightness of the pressing screw of the pumping unit and the stability of the pumping unit base.
Wherein, monitoring devices 7 of pumping unit base vibration volume can adopt the explosion-proof vibration displacement sensor of integration that the model is LZDWL 1. The main technical parameters are as follows:
1. an output mode: DC output (4-20mA) (Note: if the vibration value is constant, the output current value remains constant)
The temperature output can be selected from 4-20mA or PT100 platinum resistor
2. Speed direction: from the bottom to the sensor (Forward)
3. Ambient temperature: minus 40 ℃ to plus 85 DEG C
4. Frequency response: 5 to 2000HZ
5. Precision: plus or minus 2 percent
6. Resolution ratio: 0.5mgRMS
7. Lateral sensitivity ratio: less than or equal to 5 percent
8. Power supply voltage: +10 to +28VDC
9. Load resistance: < 750 Ω
10. Range of measurement (effective value): 0 to 10mm
11. Impact Limit (Peak) 1000g
12. Structural form of shear
13. Piezoelectric material: PZT-5
14. Protection grade: ip67
15. The shell material is as follows: stainless steel
16. Weight: 80 g
The operation monitoring device and the fault early warning system of the pumping unit of the embodiment of the invention also comprise: the device 11 for monitoring the shaft serial quantity of the main shaft of the reduction gearbox is arranged between the belt pulley of the pumping unit and the shell of the reduction gearbox, namely is arranged on the inner side of the large belt pulley of the pumping unit, is used for monitoring the shaft serial quantity of the main shaft of the reduction gearbox and sending the shaft serial quantity to the wireless communication device 5, the wireless communication device 5 further forwards the shaft serial quantity to the control device 6, and when the control device 6 judges that the shaft serial quantity of the main shaft of the reduction gearbox exceeds a preset shaft serial quantity threshold value, the main shaft is judged to be in serial, and the alarm device 7 is controlled to send an alarm signal.
The tandem axle quantity of the main shaft of the reduction box can be measured through relative displacement, the monitoring device 11 of the tandem axle quantity of the main shaft of the reduction box judges whether the main shaft is in tandem axle or not through the change of the relative position measured by the displacement sensor, and the alarm can be given in advance once the set numerical value is exceeded.
In the embodiment of the present invention, the reduction box main shaft tandem axis amount monitoring device 11 adopts a displacement sensor, for example, a model R60D RVIT (rotary variable inductance sensor) is a dc non-contact angle displacement sensor, and the parameters are as follows: sensor type RVIT; angle sensing range (°): ± 60; a power supply Voltage (VDC) of 13.5-16.5; InputCurrent (Max) 25; non-linearity (percent) +/-. 5.
The operation monitoring device and the fault early warning system of the pumping unit of the embodiment of the invention also comprise: video monitoring devices 12 for the video signal of monitoring production tree packing box adopts wireless video signal transmission mode, sends video signal to wireless communication device 5, and further forwards to controlling means 6 by wireless communication device 5, receives video signal when controlling means 6, then transmits to display device and judges whether the packing box is the oil leak through video image, when judging that production tree packing box takes place to leak, controls alarm device 7 and sends alarm signal.
In addition, the pumping unit operation monitoring device and the fault early warning system of the embodiment of the invention further comprise: and the motor temperature sensor is used for monitoring the temperature change of the motor of the pumping unit, sending the temperature value to the wireless communication device 5, further forwarding the temperature value to the control device 6 by the wireless communication device 5, and when the control device 6 judges that the temperature value exceeds a preset temperature threshold value, considering that the motor possibly breaks down, and controlling the alarm device to send an alarm signal.
According to the pumping unit operation monitoring device and the fault early warning system provided by the embodiment of the invention, the operation monitoring device is used for monitoring the operation state of the main parts of the pumping unit, so that whether each part has a fault can be found in time, an alarm is given in time to remind a user, and corresponding measures are adopted for removing the fault, so that the safety of the pumping unit in operation can be greatly improved, the workload of operation management personnel is reduced, the operation safety is improved, and the hidden danger of unplanned shutdown of the pumping unit caused by the fault is 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.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an oil pumping unit operation monitoring devices and trouble early warning system which characterized in that includes: a hair pigtail elongation monitoring device, a crank pin lock nut monitoring device, a middle shaft and tail shaft bearing vibration monitoring device, a reduction box pulley rotating speed monitoring device, a wireless communication device, a control device, an alarm device and a display device, wherein,
the device for monitoring the elongation of the hair braid is arranged at the position of a rope hanger of the oil pumping unit and is used for monitoring the elongation of the hair braid of the oil pumping unit;
the crank pin locking nut monitoring devices are arranged on the left side and the right side of the inner side of a crank of the pumping unit and are used for monitoring displacement variation of a crank pin nut; the crank pin locking nut monitoring device comprises two crank pin locking nut monitoring devices, wherein the two crank pin locking nut monitoring devices are respectively arranged on the left side and the right side of the inner side of a crank of the pumping unit, namely the crank pin locking nut on the inner side of the crank and used for monitoring the displacement variation of a crank pin nut; the crank pin locking nut monitoring device adopts an LVDT displacement sensor, whether the nut is loosened or not is determined, and loosening monitoring of the screw cap is realized; the crank pin locking nut monitoring device simultaneously monitors locking nuts of a left crank pin and a right crank pin of the pumping unit;
the middle shaft and tail shaft bearing vibration monitoring device comprises: the central shaft bearing monitoring unit is arranged on the left side and the right side of a central shaft of the pumping unit and used for monitoring the vibration quantity of the central shaft of the pumping unit; the tail shaft bearing monitoring units are arranged on the left side and the right side of the tail shaft of the oil pumping unit and used for monitoring the vibration quantity of the tail shaft of the oil pumping unit;
the speed monitoring device for the belt pulley of the reduction gearbox is arranged at the belt pulley of the input shaft of the reduction gearbox of the pumping unit and used for monitoring the speed of the belt pulley of the reduction gearbox of the pumping unit;
the wireless communication device is used for receiving monitoring data from the hair pigtail elongation monitoring device, the crank pin locknut monitoring device, the middle shaft and tail shaft bearing vibration monitoring device and the reduction box belt pulley rotating speed monitoring device and sending the monitoring data to the control device through a wireless gateway;
the control device analyzes the monitoring data, and sends out an alarm instruction to the alarm device and the display device when judging that any one of the following conditions occurs:
(1) the elongation monitored by the braid elongation monitoring device is in an abnormal state;
(2) the displacement variation monitored by the crank pin locknut monitoring device exceeds a preset displacement threshold;
(3) the vibration quantity monitored by the middle shaft and tail shaft bearing vibration monitoring device exceeds a preset vibration threshold;
(4) the rotating speed detected by the speed reduction box belt pulley rotating speed monitoring device is lower than a preset rotating speed threshold;
the alarm device sends out an alarm signal according to the alarm instruction;
the display device is used for displaying the device name and monitoring data needing alarming for a user to view;
the vibration monitoring device of the reduction gearbox is used for monitoring the vibration quantity of the reduction gearbox, sending the vibration quantity to the wireless communication device, further transmitting the vibration quantity to the control device through the wireless communication device, judging whether the bearing of the reduction gearbox is in fault or the screw of the reduction gearbox is loosened when the control device judges that the vibration of the reduction gearbox exceeds a preset vibration quantity threshold value of the reduction gearbox, and controlling the alarm device to send an alarm signal;
the device for monitoring the shaft serial quantity of the main shaft of the reduction gearbox is arranged between a belt pulley of the pumping unit and a shell of the reduction gearbox, is used for monitoring the shaft serial quantity of the main shaft of the reduction gearbox, sending the shaft serial quantity to the wireless communication device, further forwarding the shaft serial quantity to the control device through the wireless communication device, judging that the main shaft is in shaft serial when the control device judges that the shaft serial quantity of the main shaft of the reduction gearbox exceeds a preset shaft serial quantity threshold value, and controlling the alarm device to send an alarm signal.
2. The operation monitoring device and the fault early warning system of the oil pumping unit according to claim 1, wherein the control device is used for pre-alarming to be an uplink wax card or a pump card when judging that the elongation monitored by the braid elongation monitoring device exceeds a preset upper limit value; when the elongation is reduced, the wax card or the pump card is pre-alarmed to be in a descending state.
3. The pumping unit operation monitoring device and fault early warning system of claim 1, wherein the control device determines that the nut has loosened when determining that the amount of change in displacement monitored by the crank pin locknut monitoring device exceeds a predetermined displacement threshold.
4. The device for monitoring the operation of the pumping unit and the system for early warning the failure of the pumping unit as claimed in claim 1, wherein the control device determines that the bearing failure of the middle shaft or the tail shaft occurs when the vibration amount monitored by the middle shaft and tail shaft bearing vibration monitoring device is determined to exceed a preset vibration threshold.
5. The device for monitoring the operation of the pumping unit and the system for early warning the failure of the pumping unit as claimed in claim 1, wherein the control device determines that the problems of belt slippage, excessive load, pump blockage or wax blockage occur when the control device determines that the rotation speed monitored by the device for monitoring the rotation speed of the belt pulley of the reduction gearbox is lower than a preset rotation speed threshold value.
6. The pumping unit operation monitoring device and the fault early warning system according to claim 1, wherein the plait elongation monitoring device adopts a pull rope displacement sensor; the crank pin locking nut monitoring device adopts an LVDT displacement sensor; the middle shaft and tail shaft bearing vibration monitoring device adopts an eddy current type vibration sensor; the speed monitoring device of the belt pulley of the reduction gearbox adopts an angle sensor or a speed sensor.
7. The pumping unit operation monitoring device and fault early warning system of claim 1, further comprising: the monitoring device of the vibration quantity of the pumping unit base is installed on the left side and the right side of the front end of the pumping unit base, is used for monitoring the vibration quantity of the pumping unit base and sending the vibration quantity to the wireless communication device, the wireless communication device further forwards the vibration quantity to the control device, when the control device judges that the vibration quantity of the pumping unit base exceeds a preset vibration quantity threshold value of the pumping unit base, the pumping unit base is judged to be unstable, and the control alarm device sends an alarm signal.
8. The pumping unit operation monitoring device and fault early warning system of claim 1, further comprising: the video monitoring device is used for monitoring video signals of the Christmas tree packing box and sending the video signals to the wireless communication device, the wireless communication device further forwards the video signals to the control device, when the control device receives the video signals, the video signals are transmitted to the display device to judge whether the packing box leaks oil or not through video images, and when the Christmas tree packing box leaks, the alarm device is controlled to send out alarm signals.
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| CN114000853A (en) * | 2020-07-28 | 2022-02-01 | 中国石油天然气股份有限公司 | Control method and control system of oil pumping unit and computer readable storage medium |
| CN113294127A (en) * | 2021-05-12 | 2021-08-24 | 青岛力久电机科技有限公司 | Special intelligent control system for oil pumping unit |
| CN113338909B (en) * | 2021-08-09 | 2021-10-26 | 天津市正方科技发展有限公司 | Pumping unit fault inspection system based on audio and sound collection method |
| CN117167448B (en) * | 2023-09-07 | 2024-03-26 | 大庆石油管理局有限公司 | Tower type pumping unit belt system with safety breaking-off prevention device |
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