Pumping unit reducer state on-line monitoring device

Abstract

The application discloses an on-line monitoring device for the state of a pumping unit speed reducer, which comprises a first measuring mechanism, a second measuring mechanism, a power supply mechanism and a controller. The first measuring mechanism is installed on the cover plate of the speed reducer through a connecting seat and is used for on-line monitoring the running state outside the speed reducer. The second measuring mechanism is connected with the connecting seat through a thread and is used for on-line monitoring the running state inside the speed reducer. The power supply mechanism is connected with the controller respectively and is used for supplying power to the first measuring mechanism and the second measuring mechanism. The controller is connected with the first measuring mechanism and the second measuring mechanism respectively and is used for collecting the measuring data and sending the data to a remote control end. The application can realize real-time on-line monitoring, can monitor the running state of the pumping unit speed reducer in real time, can find the faults of the pumping unit speed reducer in time and can provide data support for preventive maintenance.

Description

Technical Field

[0001] This invention belongs to the field of petrochemicals, specifically relating to an online monitoring device for the status of an oil pumping unit reducer. Background Technology

[0002] As a core component of an oil pumping unit, the speed reducer is subjected to enormous stress from the transmission equipment during operation. A malfunction will cause damage to the gears and drive shaft. Common speed reducer failure types and their causes are as follows:

[0003] (1) Lubricating oil leakage from the gearbox. Leakage occurs at the sealing parts of the shaft head, especially the sealing ring of the drive shaft. For oil pump gearboxes using internal expansion brakes, the leakage is more obvious on the side of the drive shaft brake wheel; oil leakage occurs at the joint surface of the gearbox; oil leakage occurs at the sight glass cover on the upper side of the gearbox; and oil leakage occurs at the drain hole at the bottom of the gearbox.

[0004] (2) Gear damage in the gearbox. This includes abnormal wear, broken teeth, spalling, and pitting on the gear surface. Causes include insufficient lubricating oil, excessive water content in the lubricating oil, metal particles generated by wear, and mechanical fatigue.

[0005] (3) Gearbox shaft misalignment. Causes include gear breakage, insufficient interference fit, gear misalignment during manufacturing, helix angle error of the driven gear, excessive gear thickness deviation, wear of gear contact surface, and large deformation on the back of the gear.

[0006] (4) Damaged gearbox bearings. The main causes include excessive load and deterioration of lubricating oil.

[0007] The national recommended standard GB / T 19832-2017 Inspection, Maintenance, Repair and Modification of Drilling and Oil Production Hoisting Equipment in the Petroleum and Natural Gas Industry and the Sinopec Shengli Oilfield enterprise standard SY / T 6668-2016 Installation and Maintenance of Beam Pumping Units stipulate that:

[0008] (1) The temperature rise of the bearing shall not exceed 40°C, the temperature rise of the oil bath shall not exceed 15°C, and the maximum temperature shall not exceed 70°C.

[0009] (2) There shall be no oil leakage or seepage at any sealing or joint;

[0010] (3) The operation should be smooth, without any impact, vibration or abnormal noise;

[0011] (4) The gear tooth surface shall not have destructive pitting.

[0012] Currently, the detection and diagnosis of speed reducers mainly rely on manual, periodic inspections. This involves visually inspecting for lubricating oil leaks, dosage, and contamination, as well as the condition of gears and bearings; and checking the overall noise level using a sound level meter or listening instrument. This current method has the following drawbacks:

[0013] (1) The standard is applied arbitrarily, the judgment is qualitative, and the inspection results cannot be quantified;

[0014] (2) The oil pumping units are geographically dispersed, and the amount of manual inspection is large, making it impossible to achieve real-time monitoring. Regular inspections are prone to insufficient or excessive equipment maintenance.

[0015] (3) The oil pumping unit needs to be shut down, which affects normal production and poses a safety risk to personnel. Summary of the Invention

[0016] In view of this, the main objective of the present invention is to provide an online monitoring device for the status of an oil pumping unit reducer.

[0017] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0018] This invention provides an online monitoring device for the status of a pumping unit reducer, the device comprising a first measuring mechanism, a second measuring mechanism, a power supply mechanism, and a controller;

[0019] The first measuring mechanism is mounted on the cover plate of the reducer via a connecting seat, and is used to monitor the external operating status of the reducer online;

[0020] The second measuring mechanism is connected to the connecting seat via a thread and is used for online monitoring of the internal operating status of the reducer;

[0021] The power supply mechanism is connected to the controller and is used to supply power to the first measuring mechanism and the second measuring mechanism;

[0022] The controller is connected to the first measuring mechanism and the second measuring mechanism respectively, and is used to collect measurement data and send data to the remote control terminal.

[0023] In the above scheme, the first measuring mechanism includes a top cover, a housing, a pressure acquisition unit, and a vibration acquisition unit. The housing is located above the connecting seat and has a top cover on top. The pressure acquisition unit is located inside the housing and communicates with the outside atmosphere through an external vent A and with the reducer oil chamber through an internal vent B. The vibration acquisition unit is located at the bottom inside the housing. The support columns are located on both sides of the housing and are connected to the top cover at the top.

[0024] In the above scheme, the vibration acquisition unit includes a vibration sensor, a selection circuit, a signal amplification circuit, an AD conversion circuit, and a voltage reference circuit; the selection circuit is connected to the signal amplification circuit, the AD conversion circuit, and the voltage reference circuit respectively, and the vibration sensor is connected to the signal amplification circuit.

[0025] In the above scheme, the selection circuit includes a fourth chip U4, tenth resistors R10 to thirteenth resistors R13, and a sixteenth capacitor C16. The first terminal of the fourth chip U4 is connected to the signal amplification circuit via the tenth resistor R10, the third terminal is grounded via the sixteenth capacitor C16, the fourth terminal is connected to the AD conversion circuit via the twelfth resistor R12, the eighth terminal is connected to the signal amplification circuit via the eleventh resistor R11, the sixth terminal is grounded, and the fifth terminal is connected to the signal amplification circuit via the thirteenth resistor R13.

[0026] In the above scheme, the signal amplification circuit includes a third chip U3, an eighth resistor R8, a ninth resistor R9, twelfth capacitors C12 to fifteenth capacitors C15, a first connector CON1, and a second connector CON2. The first terminal of the third chip U3 is connected between the second terminal and the first connector CON1 via the twelfth capacitor C12. The third terminal is connected to the fifth terminal. The fourth terminal has one path connected to -6.5V and another path connected between the third and fifth terminals via the fourteenth capacitor C14. The sixth terminal is connected to the second connector CON2. The seventh terminal has one path connected between the sixth terminal and the second connector CON2 via the thirteenth capacitor C13, and another path connected to the selection circuit. The eighth terminal has one path connected to 6.5V and another path grounded via the fifteenth capacitor C15. One end of the ninth resistor R9 is connected between the seventh terminal and the selection circuit, and the other end is connected between the sixth terminal and the second connector CON2. The eighth resistor R8 is connected in parallel with the twelfth capacitor C12, and one side of the eighth resistor R8 is connected to the selection circuit.

[0027] In the above scheme, the AD conversion circuit includes a fifth chip U5, seventeenth capacitors C17 to twenty-first capacitors C21, fourteenth resistor R14, and fifteenth resistor R15. The first terminal of the fifth chip U5 is connected to the seventeenth capacitor C17, and the second terminal is connected to the eighteenth capacitor C18. The seventeenth capacitor C17 and the eighteenth capacitor C18 are connected in parallel and then grounded. The third terminal is grounded through the nineteenth capacitor C19 and the other terminal is grounded through the twentieth capacitor C20 and the twenty-first capacitor C21. The fourth terminal is connected between the twentieth capacitor C20 and the twenty-first capacitor C21 and then connected to the selection circuit through the fifteenth resistor R15. One end of the fourteenth resistor R14 is connected between the nineteenth capacitor C19 and the twentieth capacitor C20, and the other end is connected to the selection circuit.

[0028] In the above scheme, the voltage reference circuit includes a seventh chip U7, a nineteenth resistor R19, a twentieth resistor R20, and thirty-second to thirty-fourth capacitors C32 to C34. The first and second terminals of the seventh chip U7 are connected together, one path is connected to VCC, and the other path is grounded through the thirty-second capacitor C32. The third and fourth terminals are grounded together, and the fifth and eighth terminals are grounded respectively. The sixth and seventh terminals are connected together and then grounded through the nineteenth resistor R19 and the twentieth resistor R20. The thirty-fourth capacitor C34 is connected in parallel with the twentieth resistor R20. One end of the thirty-third capacitor C33 is grounded, and the other end is connected between the seventh terminal and the nineteenth resistor R19.

[0029] In the above scheme, the power supply unit is located inside the casing and includes a flexible solar panel, a lithium battery, and a power management PCB board. The power management PCB board is horizontally mounted inside the casing via a support column. Several lithium batteries are connected in series and then connected to the power management PCB board. The power management PCB board is connected to a controller, which is connected to the pressure acquisition unit, vibration acquisition unit, and second measurement mechanism of the first measuring mechanism, respectively. The flexible solar panel is axially mounted on the inner wall side of the casing, and the casing is made of transparent material. The flexible solar panel is connected to the power management PCB board. The external vent A is axially mounted at the bottom of the casing, and the internal vent B is axially mounted at the bottom of the casing and penetrates the connecting seat.

[0030] In the above scheme, the second measuring mechanism includes a power supply and signal harness, a rod, a liquid level acquisition unit, a temperature acquisition unit, and an oil quality acquisition unit. The upper end of the rod is connected to the connecting seat, and the lower end is connected to the oil quality acquisition unit. The oil quality acquisition unit is installed on the rod, and the temperature acquisition unit is installed on the lower side of the rod and is connected to the controller through the power supply and signal harness.

[0031] In the above scheme, the liquid level acquisition unit includes an upper oil level limiting ring, a float, and a lower oil level limiting ring. The float is mounted on the rod body, and upper and lower oil level limiting rings are respectively provided on its upper and lower sides.

[0032] Compared with existing technologies, this invention enables real-time online monitoring, allowing for real-time monitoring of the operating status of the pumping unit reducer, timely detection of pumping unit reducer faults, and providing data support for preventive maintenance; it replaces manual inspection, greatly reducing the labor intensity of workers and improving work efficiency; it avoids major accidents, reduces downtime, and increases oil production. Attached Figure Description

[0033] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and, together with their descriptions, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0034] Figure 1 This is a schematic diagram of the structure of an online monitoring device for the status of an oil pumping unit reducer provided in an embodiment of the present invention;

[0035] Figure 2 This invention provides a schematic block diagram of an online monitoring device for the status of an oil pumping unit reducer, as an embodiment of the present invention.

[0036] Figure 3 A circuit diagram of the selection circuit in an online monitoring device for the status of an oil pumping unit reducer is provided in this embodiment of the invention.

[0037] Figure 4 A circuit diagram of a signal amplification circuit in an online monitoring device for the status of an oil pumping unit reducer is provided in this embodiment of the invention.

[0038] Figure 5 A circuit diagram of an AD conversion circuit in an online monitoring device for the status of a pumping unit reducer is provided in this embodiment of the invention.

[0039] Figure 6 The present invention provides a circuit diagram of a voltage reference circuit in an online monitoring device for the status of an oil pump reducer. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0041] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0042] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0043] This invention provides an online monitoring device for the status of a pumping unit reducer, such as... Figure 1 , 2 As shown, the device includes a first measuring mechanism 1, a second measuring mechanism 2, a power supply mechanism, and a controller;

[0044] The first measuring mechanism 1 is mounted on the cover plate of the reducer via a connecting seat 108, and is used to monitor the external operating status of the reducer online;

[0045] The second measuring mechanism 2 is connected to the connecting seat 108 via a thread and is used for online monitoring of the internal operating status of the reducer;

[0046] The power supply mechanism is connected to the controller and is used to supply power to the first measuring mechanism 1 and the second measuring mechanism 2.

[0047] The controller is connected to the first measuring mechanism 1 and the second measuring mechanism 2 respectively, and is used to collect measurement data and send data to the remote control terminal.

[0048] The first measuring mechanism 1 includes a top cover 101, a housing 102, a pressure acquisition unit 106, and a vibration acquisition unit 107. The housing 102 is disposed above the connecting seat 108, and the top cover 101 is disposed on the top. The pressure acquisition unit 106 is disposed inside the housing 102 and is connected to the atmosphere outside the housing 102 through an external vent A, and is also connected to the reducer oil chamber through an internal vent B, thereby monitoring the pressure change of the reducer oil chamber. The vibration acquisition unit 107 is disposed at the bottom inside the housing 102, thereby monitoring the vibration of the reducer.

[0049] The power supply unit is located inside the housing 102 and is connected to the pressure acquisition unit 106 and the vibration acquisition unit 107 respectively.

[0050] The pressure acquisition unit 106 uses a differential pressure sensor.

[0051] Furthermore, the vibration acquisition unit 107 includes a vibration sensor, a selection circuit, a signal amplification circuit, an AD conversion circuit, and a voltage reference circuit; the selection circuit is connected to the signal amplification circuit, the AD conversion circuit, and the voltage reference circuit respectively, and the vibration sensor is connected to the signal amplification circuit.

[0052] The signal amplification circuit converts the charge generated by the vibration sensor into a voltage signal, and selects an appropriate amplification channel through the selection circuit to amplify the signal. The amplified voltage signal is converted into a digital quantity by the AD conversion circuit and transmitted to the controller. The voltage reference circuit provides a reference voltage for the AD conversion circuit.

[0053] like Figure 3 As shown, the selection circuit includes a fourth chip U4, tenth resistors R10 to thirteenth resistors R13, and a sixteenth capacitor C16. The first terminal of the fourth chip U4 is connected to the signal amplification circuit via the tenth resistor R10, the third terminal is grounded via the sixteenth capacitor C16, the fourth terminal is connected to the AD conversion circuit via the twelfth resistor R12, the eighth terminal is connected to the signal amplification circuit via the eleventh resistor R11, the sixth terminal is grounded, and the fifth terminal is connected to the signal amplification circuit via the thirteenth resistor R13.

[0054] like Figure 4 As shown, the signal amplification circuit includes a third chip U3, an eighth resistor R8, a ninth resistor R9, twelfth capacitors C12 to fifteenth capacitors C15, a first connector CON1, and a second connector CON2. The first terminal of the third chip U3 is connected between the second terminal and the first connector CON1 via the twelfth capacitor C12. The third terminal is connected to the fifth terminal. The fourth terminal has one path connected to -6.5V, and another path connected between the third and fifth terminals via the fourteenth capacitor C14. The sixth terminal is connected to the second connector CON2. The seventh terminal has one path connected between the sixth terminal and the second connector CON2 via the thirteenth capacitor C13, and another path connected to the selection circuit. The eighth terminal has one path connected to 6.5V, and another path connected to ground via the fifteenth capacitor C15. One end of the ninth resistor R9 is connected between the seventh terminal and the selection circuit, and the other end is connected between the sixth terminal and the second connector CON2. The eighth resistor R8 is connected in parallel with the twelfth capacitor C12, and one side of the eighth resistor R8 is connected to the selection circuit.

[0055] like Figure 5As shown, the AD conversion circuit includes a fifth chip U5, seventeenth capacitors C17 to twenty-first capacitors C21, fourteenth resistor R14, and fifteenth resistor R15. The first terminal of the fifth chip U5 is connected to the seventeenth capacitor C17, and the second terminal is connected to the eighteenth capacitor C18. The seventeenth capacitor C17 and the eighteenth capacitor C18 are connected in parallel and then grounded. The third terminal is grounded through the nineteenth capacitor C19 and the other terminal is grounded through the twentieth capacitor C20 and the twenty-first capacitor C21. The fourth terminal is connected between the twentieth capacitor C20 and the twenty-first capacitor C21 and then connected to the selection circuit through the fifteenth resistor R15. One end of the fourteenth resistor R14 is connected between the nineteenth capacitor C19 and the twentieth capacitor C20, and the other end is connected to the selection circuit.

[0056] like Figure 6 As shown, the voltage reference circuit includes a seventh chip U7, a nineteenth resistor R19, a twentieth resistor R20, and thirty-second to thirty-fourth capacitors C32 to C34. The first and second terminals of the seventh chip U7 are connected together, one path is connected to VCC, and the other path is grounded through the thirty-second capacitor C32. The third and fourth terminals are grounded together, and the fifth and eighth terminals are grounded respectively. The sixth and seventh terminals are connected together and then grounded through the nineteenth resistor R19 and the twentieth resistor R20. The thirty-fourth capacitor C34 is connected in parallel with the twentieth resistor R20. One end of the thirty-third capacitor C33 is grounded, and the other end is connected between the seventh terminal and the nineteenth resistor R19.

[0057] The power supply unit includes a lithium battery 105 and a power management PCB board. The power management PCB board is horizontally arranged inside the housing 102 via a support column. Several lithium batteries 105 are arranged and connected in series to the power management PCB board. The power management PCB board is connected to the pressure acquisition unit 106 and the vibration acquisition unit 107 respectively.

[0058] The power supply unit also includes a flexible solar panel 103, which is axially disposed on the inner wall side of the housing 102, and the housing 102 is made of transparent material. The flexible solar panel 103 is connected to the power management PCB board.

[0059] The power management PCB board includes a battery protection circuit, a charge / discharge management circuit, and a power acquisition circuit. The lithium battery 105 is connected to the controller via the battery protection circuit and the power acquisition circuit. The flexible solar panel 103 is connected to the battery protection circuit via the charge / discharge management circuit.

[0060] Powered by a solar panel and battery, the charging and discharging management circuit enables three charging modes: trickle, constant current, and constant voltage. The maximum charging current reaches 350mA, and the charging efficiency is 95%. The battery protection circuit provides overvoltage charging protection, overvoltage discharging protection, and overcurrent discharging protection for the rechargeable lithium battery. The power acquisition circuit collects the battery terminal voltage in real time and sends it to the controller to monitor the battery power.

[0061] In this way, the entire device does not require an external power supply, greatly improving the ease of installation.

[0062] The support columns 104 are located on both sides of the outer casing 102 and are connected to the top cover 101 at the top.

[0063] The external vent A is axially disposed at the bottom of the housing 102, and the internal vent B is axially disposed at the bottom of the housing 102 and penetrates the connecting seat 108.

[0064] The second measuring mechanism 2 includes a power supply and signal harness 201, a rod 202, a liquid level acquisition unit, a temperature acquisition unit 206, and an oil quality acquisition unit 207. The upper end of the rod 202 is connected to the connecting seat 108, and the lower end is connected to the oil quality acquisition unit 207. The oil quality acquisition unit 207 is mounted on the rod 202, and the temperature acquisition unit 206 is mounted on the lower side of the rod 202 and is connected to the controller through the power supply and signal harness 201. The liquid level acquisition unit includes an upper oil level limiting ring 203, a float 204, and a lower oil level limiting ring 205. The float 204 is mounted on the rod 202, and the upper oil level limiting ring 203 and the lower oil level limiting ring 205 are respectively mounted on its upper and lower sides.

[0065] The temperature acquisition unit 206 uses a temperature sensor.

[0066] The oil quality acquisition unit 207 uses an oil quality sensor.

[0067] The temperature acquisition unit 206 is located on the lower side of the rod 202 and is connected to the controller through the power supply and signal harness 201. The temperature acquisition unit 206 is located below the lower oil level limit ring 205 and monitors the temperature change of the gearbox oil.

[0068] The float 204 rises or falls with the change of oil level. When the oil level rises, the upper end of the float 204 contacts the upper oil level limit ring 203, the upper oil level monitoring switch is turned on, and an alarm is issued that the oil level has reached the upper limit. When the oil level falls, the lower end of the float 204 contacts the upper oil level limit ring 205, the lower oil level monitoring switch is turned on, and an alarm is issued that the oil level has reached the lower limit.

[0069] The information collected by the controller is processed by the microcontroller and then transmitted remotely by the Zigbee module.

[0070] The vibration acquisition unit 107 acquires the X, Y, and Z axis vibration signals of the reducer and sends the acquired data to the controller through the IIC interface. The controller calculates the three-axis vibration of the reducer.

[0071] The temperature acquisition unit 206 acquires the lubricating oil temperature and sends it to the controller via a single-wire bus interface.

[0072] The upper oil level limiting ring 203, float 204, and lower oil level limiting ring 205 are synchronized with the float and the liquid level. The lubricating oil level signal is obtained by sensing the position of the float through magnetic effect and sent to the controller.

[0073] The pressure acquisition unit 106 detects the minute gas flow between the reducer lubricating oil chamber and the atmospheric environment, calculates the pressure difference between the reducer lubricating oil chamber and the atmospheric environment through the gas flow rate, and sends it to the controller through the IIC interface.

[0074] The oil quality acquisition unit 207 consists of a cylindrical capacitor and a capacitance measurement circuit. The cylindrical capacitor is immersed in the lubricating oil, and the capacitance measurement circuit measures the capacitance value of the cylindrical capacitor and sends it to the controller. The controller calculates the dielectric constant and quality indicators of the lubricating oil based on the capacitance value.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. An on-line monitoring device for the condition of a pumping unit reducer, characterized in that, The device comprises a first measuring mechanism, a second measuring mechanism, a power supply mechanism, a controller; the first measuring mechanism is installed on the cover plate of the speed reducer through the connecting seat, used for online monitoring the running state outside the speed reducer; the second measuring mechanism is connected with the connecting seat through threads, used for online monitoring the running state inside the speed reducer; the power supply mechanism is connected with the controller respectively, used for supplying power to the first measuring mechanism and the second measuring mechanism; the controller is connected with the first measuring mechanism and the second measuring mechanism respectively, used for collecting measurement data and sending data to the remote control end; the first measuring mechanism comprises an upper cover, a shell, a pressure collecting unit, a vibration collecting unit; the vibration collecting unit comprises a vibration sensor, a selection circuit, a signal amplification circuit, an AD conversion circuit and a voltage reference circuit; the power supply mechanism is arranged in the shell and comprises a flexible solar panel, a lithium battery and a power management PCB; the second measuring mechanism comprises a power supply and signal wire harness, a rod body, a liquid level collecting unit, a temperature collecting unit and an oil quality collecting unit; the liquid level collecting unit comprises an upper oil level limiting ring, a floating ball and a lower oil level limiting ring; the shell is arranged above the connecting seat and the top is provided with the upper cover; the pressure collecting unit is arranged in the shell and communicates with the atmosphere outside the shell through an external air hole A and communicates with the oil cavity of the speed reducer through an internal air hole B; the vibration collecting unit is arranged at the bottom of the shell and the support column is arranged at both sides of the shell and the top is connected with the upper cover; the selection circuit is connected with the signal amplification circuit, the AD conversion circuit and the voltage reference circuit respectively; the vibration sensor is connected with the signal amplification circuit; the power management PCB is arranged horizontally in the shell through the support column; the lithium battery is arranged in several and connected in series and connected with the power management PCB; the power management PCB is connected with the controller; the controller is connected with the pressure collecting unit and the vibration collecting unit of the first measuring mechanism and the second measuring mechanism; the flexible solar panel is arranged on the inner wall side of the shell along the axial direction and the shell is made of transparent material; the flexible solar panel is connected with the power management PCB; the external air hole A is arranged at the bottom of the shell along the axial direction and the internal air hole B is arranged at the bottom of the shell along the axial direction and penetrates the connecting seat.

2. The pumping unit reducer state on-line monitoring device according to claim 1, characterized in that, The upper end of the rod body is connected with the connecting seat and the lower end is connected with the oil quality collecting unit; the oil quality collecting unit is arranged on the rod body; the temperature collecting unit is arranged on the lower side of the rod body and connected with the controller through the power supply and signal wire harness.

3. The pumping unit reducer state on-line monitoring device according to claim 2, characterized in that, The floating ball is arranged on the rod body and the upper and lower sides thereof are respectively provided with the upper oil level limiting ring and the lower oil level limiting ring.

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