Fault alarm device for speed reducer of oil pumping unit
By installing displacement sensors, vibration monitoring mechanisms, and liquid level sensors on the pumping unit reducer, the vibration, temperature, and oil level of the reducer can be monitored in real time, solving the reducer wear problem, enabling timely alarms and maintenance, and extending the equipment life.
Patent Information
- Application Number
- CN202520306402.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-25
AI Technical Summary
Existing pumping unit reducers, after prolonged operation in harsh environments, cannot monitor changes in oil level, vibration, and temperature in a timely manner, leading to wear on gears and bearings, which may cause mechanical equipment accidents and economic losses.
A fault alarm device for a pumping unit reducer was designed. The device monitors the reducer's vibration, temperature, and oil level in real time using a displacement sensor, vibration monitoring mechanism, temperature sensor, and liquid level sensor. An alarm is triggered when the levels exceed the set range, allowing for timely maintenance.
It enables real-time monitoring and early warning of the reducer, preventing accelerated wear, extending the reducer's service life, and avoiding equipment accidents and economic losses.
Smart Images
Figure CN223908741U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of reducer fault monitoring alarm device, specifically relates to pumping unit reducer fault alarm device. BACKGROUND
[0002] At present, the pumping unit system of each big oil field is conventional oil production mechanical device, is distributed in the vast desert of oil field, deep mountain, severe cold and hot, wide region, and the temperature difference is as high as 90 degrees C or so, and the pumping equipment is in continuous all-day operation state, the working environment is poor, the oil production block is big and scattered, and the block management personnel cannot effectively monitor and manage each pumping unit, therefore some pumping units of the block do not break down, and only when the machine breaks down, the pumping unit is stopped passively, which often causes unnecessary major accident loss.
[0003] The reducer is the most important mechanical transmission mechanism of the pumping unit, the speed reducer is an independent part composed of gear transmission, worm transmission and gear-worm transmission enclosed in a rigid shell, and is commonly used as a speed reduction transmission device between a prime mover and a working machine, and plays a role of matching rotating speed and transmitting torque between the prime mover and the working machine or the actuator.
[0004] After the reducer runs for a long time, the oil tank inside the reducer will be out of oil, if not found in time, the lubrication condition of the gear and bearing will deteriorate, and the wear of the gear and bearing will be accelerated, and the existing internal structure of the reducer will be worn out after a long time of operation, the gap between the gear and the bearing will be increased, the rotation of the gear cannot be accurately kept on the same axis all the time, and the wear degree of the structures of the reducer will be further increased, if not found in time and maintained, serious mechanical equipment accidents may occur, thereby causing unnecessary economic loss. CONTENT OF THE UTILITY MODEL
[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a pumping unit reducer fault alarm device, which can monitor the vibration state of the input shaft and the output shaft in real time, monitor the real-time temperature of each gear meshing part in the main body of the reducer in real time, monitor the oil level in the reducer in real time, supplement the lubricating oil in the reducer in time, and the data monitored by any structure of the displacement sensor, the temperature sensor and the liquid level sensor exceeds the normal range set, and the alarm mechanism is controlled by the control unit to alarm, so that the reducer can be maintained faster, and the normal operation of the reducer is ensured.
[0006] The oil pumping unit reducer fault alarm device, including upper shell, lower shell and reducer main body, the reducer main body is embedded between the upper shell and the lower shell and the upper shell and the lower shell are fixedly connected with each other, the input shaft and the output shaft of the reducer main body are respectively arranged on the two sides of the connecting part of the upper shell and the lower shell, the input shaft and the output shaft of the reducer main body are sleeved with the fixed ring, the top of the fixed ring is fixedly installed with the displacement sensor, and the inside of the fixed ring is provided with the vibration monitoring mechanism, the vibration monitoring mechanism is abutted on the outside of the input shaft and the output shaft of the reducer main body, the upper surface of the upper shell is fixedly installed with the temperature sensor capable of monitoring the temperature of the meshing part of the reducer main body, one side of the upper surface of the upper shell is provided with the liquid level sensor capable of monitoring the oil level, and the top end of the liquid level sensor is provided with the alarm mechanism.
[0007] Preferably, the input shaft and the output shaft of the reducer main body are sleeved with bearing covers on the outside, and the bearing covers are fixedly connected to the outer surface of the connecting part of the upper shell and the lower shell.
[0008] Preferably, the vibration monitoring mechanism comprises a rotating ring, a straight gear, an arc plate, a rolling wheel and a spring, the rotating ring is rotatably connected to the inside of the fixed ring, the inner surface of the rotating ring is provided with meshing teeth around, the rolling wheel is rotatably connected to one end of the arc plate away from the straight gear, and the arc plate is fixedly connected to the surface of the straight gear, the number of the straight gears is four, and the four straight gears are rotatably connected to the inside of the fixed ring in the form of annular array, the four straight gears are meshed with the meshing teeth around the inner surface of the rotating ring respectively, and the rolling wheels on the four arc plates are abutted on the outside of the input shaft and the output shaft of the reducer main body.
[0009] Preferably, one side of each of the four arc plates close to the inner surface of the fixed ring is fixedly connected with a spring, the surface of the rotating ring is provided with a through slot at the position corresponding to the four springs, and the four springs are respectively arranged in the through slots corresponding thereto, one end of each of the four springs away from the arc plate is fixedly connected to the inner surface of the fixed ring, and the sensing end of the displacement sensor is arranged in the inside of the fixed ring and corresponds to the outer surface of the rotating ring.
[0010] Preferably, the number of the temperature sensors is several, and the several temperature sensors are fixedly installed on the upper surface of the upper shell, the sensing ends of the several temperature sensors are arranged in the inside of the upper shell and correspond to the meshing parts in the reducer main body respectively.
[0011] Preferably, the liquid level sensor is fixedly installed on the upper surface of the upper shell, the detection end of the liquid level sensor is arranged in the inner bottom of the lower shell, the alarm mechanism is an audible and visual alarm, and the audible and visual alarm is fixedly installed on the top end of the temperature sensor.
[0012] The above technical scheme has the following beneficial effects:
[0013] The oil pumping unit reducer fault alarm device is provided with a displacement sensor, a vibration monitoring mechanism, a temperature sensor and a liquid level sensor, the vibration monitoring mechanism can transmit the rotating state of the input shaft and the output shaft of the reducer in real time, the displacement sensor can detect the activity frequency and amplitude of the vibration monitoring mechanism, thereby monitoring the vibration state of the input shaft and the output shaft in real time, the temperature sensor can monitor the real-time temperature of each gear meshing position in the reducer body in real time, so that the condition that the meshing position temperature is abnormally increased due to the increased friction between gears due to wear or oil shortage can be known in time, and the liquid level sensor can monitor the oil level in the reducer in real time, so that lubricating oil can be supplemented into the reducer in time; any structure monitored by the displacement sensor, the temperature sensor and the liquid level sensor will alarm through the control unit to control the alarm mechanism when the monitored data exceeds the set normal range, so that the reducer can be maintained faster, the reducer can be effectively prevented from being damaged, and the service life of the reducer is prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a whole structure schematic view of the utility model;
[0015] Figure 2 It is a temperature sensor and liquid level sensor split state schematic view of the utility model;
[0016] Figure 3 It is a reducer body schematic view of the utility model;
[0017] Figure 4 It is a fixed ring and vibration monitoring mechanism schematic view of the utility model;
[0018] Figure 5 It is a split state schematic view of the utility model Figure 4 ;
[0019] Figure 6 It is a vibration monitoring mechanism split state schematic view of the utility model;
[0020] Figure 7 It is a fixed ring section state schematic view of the utility model.
[0021] In the drawing: 1, upper shell; 2, lower shell; 3, reducer body; 4, fixed ring; 5, displacement sensor; 6, temperature sensor; 7, liquid level sensor; 8, bearing transparent cover; 9, rotating ring; 10, straight gear; 11, arc plate; 12, rolling wheel; 13, spring; 14, slot; 15, audible and light alarm. DETAILED DESCRIPTION
[0022] The foregoing and other technical contents, features and effects of the utility model are described in the following with reference to the accompanying drawings. Figures 1 to 7 The embodiment is described in detail.
[0023] The embodiment provides a pumping unit reducer fault alarm device, as shown in the accompanying drawings. Figures 1-7 As shown, it comprises an upper shell 1, a lower shell 2 and a reducer body 3, the reducer body 3 is embedded between the upper shell 1 and the lower shell 2 and the upper shell 1 and the lower shell 2 are fixedly connected with each other, the input shaft and the output shaft of the reducer body 3 are respectively arranged at the two sides of the connecting part of the upper shell 1 and the lower shell 2, the input shaft and the output shaft of the reducer body 3 are both sleeved with a bearing cover 8 which is fixedly connected to the outer surface of the connecting part of the upper shell 1 and the lower shell 2, the input shaft and the output shaft of the reducer body 3 are both arranged at the center of the bearing cover 8 corresponding to them, one end of the input shaft arranged outside the bearing cover 8 is connected with a power driving mechanism, and one end of the output shaft arranged outside the bearing cover 8 is connected with an executing mechanism.
[0024] The input shaft and the output shaft of the reducer body 3 are both sleeved with a fixing ring 4 which is fixedly installed on the side surface of the bearing cover 8, the top of the fixing ring 4 is fixedly installed with a displacement sensor 5 and the inside of the fixing ring 4 is provided with a vibration monitoring mechanism, the input shaft and the output shaft are both provided with the vibration monitoring mechanism which abuts against the outside of the input shaft and the output shaft of the reducer body 3.
[0025] The vibration monitoring mechanism comprises a rotating ring 9, a straight gear 10, an arc plate 11, a rolling wheel 12 and a spring 13, the rotating ring 9 is rotatably connected to the inside of the fixing ring 4 and the inner surface of the rotating ring 9 is provided with meshing teeth around, the rolling wheel 12 is rotatably connected to one end of the arc plate 11 away from the straight gear 10 and the arc plate 11 is fixedly connected to the surface of the straight gear 10, the number of the straight gears 10 is four and the four straight gears 10 are rotatably connected to the inside of the fixing ring 4 in the form of annular array, the four straight gears 10 are respectively meshed with the meshing teeth around the inner surface of the rotating ring 9, the rolling wheels 12 on the four arc plates 11 abut against the outside of the input shaft and the output shaft of the reducer body 3, when the input shaft or the output shaft rotates, it can drive the rolling wheels 12 around to rotate, when the rotation of the input shaft or the output shaft deviates from the shaft center, it will push the rolling wheel 12 and the arc plate 11 in the deviated direction, so that the rotating ring 9 will be driven to rotate in a small range through the corresponding straight gear 10 and the meshing teeth, and the displacement sensor 5 can monitor the movement of the rotating ring 9 and transmit the monitoring data to the control unit in real time.
[0026] The four arc-shaped plates 11 are fixedly connected with springs 13 near one side of the inner surface of the fixed ring 4, the surface of the rotating ring 9 is provided with a through slot 14 corresponding to each spring 13, and the four springs 13 are respectively arranged in the through slots 14 corresponding to the springs 13, so that the springs 13 do not affect the movement of the rotating ring 9. The ends of the four springs 13 away from the arc-shaped plates 11 are fixedly connected to the inner surface of the fixed ring 4, so as to provide elastic force to the arc-shaped plates 11 in the direction of the center of the fixed ring 4. The sensing end of the displacement sensor 5 is arranged in the inside of the fixed ring 4 and corresponds to the outer surface of the rotating ring 9. The springs 13 can push the four arc-shaped plates 11 around the fixed ring 4 to the center of the fixed ring 4, so that the rolling wheels 12 can be tightly arranged on the outside of the input shaft and the output shaft. The outer surface of the rotating ring 9 is fixedly connected with a push plate. The push plate is arranged in the side of the fixed ring 4 and can move in the side of the fixed ring 4. The installer can adjust the push plate clockwise. The rotating ring 9 can drive the four straight gears 10 to rotate clockwise through the meshing teeth, so as to make the four arc-shaped plates 11 open, adjust the inner diameter of the four rolling wheels 12, and facilitate the installation of the vibration monitoring mechanism on the outside of the rotating shaft with different diameters, so as to be applicable to rotating shafts with different diameters.
[0027] The upper surface of the upper shell 1 is fixedly provided with temperature sensors 6 for monitoring the temperature of the meshing parts of the reducer body 3. The temperature sensors 6 can be infrared temperature sensors, which can monitor the temperature of the meshing parts of the reducer body 3 without contact. The number of temperature sensors 6 is several, and the several temperature sensors 6 are fixedly installed on the upper surface of the upper shell 1. The sensing ends of the several temperature sensors 6 are arranged in the inside of the upper shell 1 and correspond to the respective meshing parts in the reducer body 3. When the gears in the reducer body 3 are worn or the friction force is increased due to some reasons, the meshing parts will generate high heat during rotation due to the friction force, which is greatly different from the temperature of normal rotation. Therefore, by arranging the temperature sensors 6 to monitor the temperature of the meshing parts, the temperature change of the gear meshing parts can be known in time, so that the response can be made in time to prevent the reducer from being damaged more seriously.
[0028] A liquid level sensor 7 for monitoring the oil level is arranged on one side of the upper surface of the upper shell 1. The liquid level sensor 7 is fixedly installed on the upper surface of the upper shell 1, and the detection end of the liquid level sensor 7 is arranged in the inner bottom of the lower shell 2. The liquid level sensor 7 can detect the content of lubricating oil in the reducer. When the content of lubricating oil is reduced to a set value, the liquid level sensor 7 can feedback the detection information to the control unit in time, and the control unit can control the sound and light alarm 15 to issue an alarm. The top end of the liquid level sensor 7 is provided with an alarm mechanism, which is a sound and light alarm 15, and the sound and light alarm 15 is fixedly installed on the top end of the temperature sensor 6.
[0029] Displacement sensor 5, temperature sensor 6, liquid level sensor 7, and audible and visual alarm 15 are all electrically connected to an external control unit. When displacement sensor 5 detects that the rotating ring 9 has an activity that exceeds the set range, or when one or more temperature sensors 6 detect an abnormal increase in temperature, or when liquid level sensor 7 detects that the oil level has dropped below the standard range, the control unit will control the audible and visual alarm 15 to issue an alarm. At the same time, the control unit can also be connected to the terminal device in the form of an electrical signal, so that the alarm information can be transmitted to the terminal device synchronously, making it convenient for monitoring personnel to know the alarm signal in time and take action.
[0030] In summary, the operating steps for this pumping unit reducer fault alarm device are as follows:
[0031] 1. When the fixed ring 4 and the vibration monitoring mechanism are installed on the input or output shaft of the reducer, the actuating plate can be pressed clockwise to make the rotating ring 9 drive the spur gears 10 and the arc plate 11 around it to rotate clockwise and open, which can expand the space between the four arc plates 11.
[0032] 2. Then, put the retaining ring 4 and the vibration monitoring mechanism on the outside of the input shaft or output shaft and make the retaining ring 4 abut against the side of the bearing cover 8 corresponding to the shaft body. Then release the actuating plate, and the arc plate 11 will make the rolling wheel 12 press against the surface of the shaft body under the elastic force of the spring 13.
[0033] 3. When the gears in the reducer are worn or otherwise reduced to a certain degree, or when the bearings are severely worn, the shaft will vibrate during rotation and cannot be accurately maintained on the same axis. When the shaft vibrates, it will push the rolling wheel 12 and the arc plate 11 on the corresponding side to rotate, which will drive the rotating ring 9 to produce a small amplitude reciprocating rotation through the spur gear 10. The displacement sensor 5 can monitor the movement of the rotating ring 9 in real time, thereby detecting the vibration of the shaft and making it easy to know the operating status of the reducer in a timely manner.
[0034] 4. When one or more temperature sensors 6 detect an abnormal increase in temperature, it indicates that the friction between the gears has increased, which will accelerate the wear and even cause damage to the reducer. When the level sensor 7 detects that the oil level has dropped below the standard range, it indicates that the lubricating oil in the reducer needs to be replenished. The control unit will control the audible and visual alarm 15 to issue an alarm.
[0035] The above description is only for illustrating the present utility model. It should be understood that the present utility model is not limited to the above embodiments, and various modifications that conform to the concept of the present utility model are within the protection scope of the present utility model.
Claims
1. Pumping unit reducer failure alarm device, comprising upper shell (1), lower shell (2) and reducer main body (3), characterized in that: The reducer body (3) is embedded between the upper shell (1) and the lower shell (2), and the upper shell (1) and the lower shell (2) are fixedly connected with each other, the input shaft and the output shaft of the reducer body (3) are respectively arranged at the two sides of the connecting part of the upper shell (1) and the lower shell (2), the input shaft and the output shaft of the reducer body (3) are sleeved with the fixing ring (4), the top of the fixing ring (4) is fixedly installed with the displacement sensor (5), and the inside of the fixing ring (4) is provided with a vibration monitoring mechanism, the vibration monitoring mechanism abuts against the outside of the input shaft and the output shaft of the reducer body (3), the upper surface of the upper shell (1) is fixedly installed with the temperature sensor (6) capable of monitoring the temperature of the meshing part of the reducer body (3), and the side of the upper surface of the upper shell (1) is provided with the liquid level sensor (7) capable of monitoring the oil level and provided with the alarm mechanism at the top end of the liquid level sensor (7).
2. The pumping unit reducer failure alarm apparatus according to claim 1, characterized in that: The input shaft and the output shaft of the reducer body (3) are sleeved with the bearing cover (8), and the bearing cover (8) is fixedly connected to the outer surface of the connecting part of the upper shell (1) and the lower shell (2), and the fixing ring (4) is fixedly installed on the side surface of the bearing cover (8).
3. The pumping unit reducer failure alarm apparatus of claim 1, wherein: The vibration monitoring mechanism comprises a rotating ring (9), a straight gear (10), an arc plate (11), a rolling wheel (12) and a spring (13), the rotating ring (9) is rotatably connected to the inside of the fixing ring (4), and the inner surface of the rotating ring (9) is provided with meshing teeth around, the rolling wheel (12) is rotatably connected to one end of the arc plate (11) away from the straight gear (10), the arc plate (11) is fixedly connected to the surface of the straight gear (10), the number of the straight gear (10) is four, and the four straight gears (10) are rotatably connected to the inside of the fixing ring (4) in the form of annular array, the four straight gears (10) are meshed with the meshing teeth around the inner surface of the rotating ring (9), and the rolling wheels (12) on the four arc plates (11) abut against the outside of the input shaft and the output shaft of the reducer body (3).
4. The pumping unit reducer failure alarm apparatus according to claim 3, characterized in that: The side of each of the four arc plates (11) close to the inner surface of the fixing ring (4) is fixedly connected with the spring (13), the surface of the rotating ring (9) is provided with the through slot (14) corresponding to the positions of the four springs (13), and the four springs (13) are respectively arranged in the through slots (14) corresponding to the four springs (13), and the ends of the four springs (13) away from the arc plates (11) are fixedly connected to the inner surface of the fixing ring (4), and the sensing end of the displacement sensor (5) is arranged in the inside of the fixing ring (4) and corresponds to the outer surface of the rotating ring (9).
5. The pumping unit reducer failure alarm apparatus of claim 1, wherein: The number of the temperature sensor (6) is several, and the several temperature sensors (6) are fixedly installed on the upper surface of the upper shell (1), and the sensing ends of the several temperature sensors (6) are arranged in the inside of the upper shell (1) and correspond to the meshing parts in the reducer body (3) respectively.
6. The pumping unit reducer failure alarm apparatus of claim 1, wherein: The liquid level sensor (7) is fixedly installed on the upper surface of the upper shell (1) and its detection end is arranged in the inner bottom of the lower shell (2), the alarm mechanism is an audible and light alarm (15) and the audible and light alarm (15) is fixedly installed on the top end of the temperature sensor (6).