Pumping unit suspension point belt, breakage monitoring device of pumping unit suspension point belt and pumping unit

Abstract

The invention relates to the technical field of petroleum engineering detection, and discloses a breakage monitoring device suitable for a pumping unit suspension point belt, which comprises a monitoring unit, and the monitoring unit comprises a first monitoring sensor and a second monitoring sensor. The monitoring unit can monitor the deformation condition of the joints of the belt body of the suspension point belt, the upper connector and the lower connector and can also monitor the deformation condition of the belt body, and therefore the deformation condition of the joints of the belt body of the suspension point belt, the upper connector and the lower connector and the deformation condition of the belt body are judged. Therefore, whether the suspension point belt is broken or not is judged, early warning is carried out on breakage of the suspension point belt, replacement is carried out before breakage of the suspension point belt, accidents caused by breakage of the belt are effectively avoided, and the working safety and reliability of the oil pumping unit are improved. The invention further provides the oil pumping unit suspension point belt and the oil pumping unit, the suspension point belt is monitored in advance, breakage early warning is achieved, and accidents caused by belt breakage are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of petroleum engineering detection, in particular to a pumping unit suspension belt and a fracture monitoring device thereof, and a pumping unit. Background Art

[0002] With the continued development of oil fields, mechanical oil recovery has become the most common method. Many long-stroke pumping units with motor-driven commutation or chain-driven H-type reversing frames utilize belts as flexible components, connecting the reversing components to the suspension points and driving the suspension points. This flexible component is typically made from multiple thin steel wire ropes bonded together with rubber vulcanization. They are typically rolled into a finished product, then cut into fixed lengths according to the pumping unit manufacturer's needs and joined at both ends to form the suspension drive belt that meets the pumping unit's requirements. This type of belt offers the following advantages: 1. A small bending radius allows for relatively compact pumping units and extends the belt's bending life; 2. A certain degree of elasticity absorbs reversing vibrations and reduces impact on the rod column; 3. Low cost; 4. Relatively easy to manufacture; and 5. A high coefficient of friction. Consequently, it is widely used in beamless pumping units.

[0003] If the suspension belt of a pumping unit using this type of flexible member suddenly breaks, it will cause a serious load loss accident. This typically results in the following consequences: 1. The suspension rope will fall off, hitting the wellhead, causing damage to the wellhead, equipment loss, and oil leakage. 2. The counterweight will fall rapidly, damaging the reversing system, potentially causing a major accident such as a rollover, resulting in complete damage to the pumping unit. 3. The safety of wellhead personnel may be endangered, leading to safety accidents. In recent years, accidents caused by sudden suspension belt breaks in belt-type pumping units have caused several environmental pollution and equipment loss in oil fields, and have received considerable attention in oil fields.

[0004] Therefore, how to predict the suspension point belt before it breaks and prevent accidents caused by suspension point belt breakage is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a pumping unit suspension belt and its fracture monitoring device and pumping unit, so as to solve the problems existing in the above-mentioned related technologies, monitor the deformation of the suspension belt, and thus predict the suspension belt before it breaks, avoid accidents caused by the suspension belt fracture, and improve the working reliability of the pumping unit.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a fracture monitoring device suitable for a suspension belt of an oil pumping unit, comprising:

[0008] The monitoring unit includes a first monitoring sensor and a second monitoring sensor. The first monitoring sensor is arranged at the connection between the belt body and the upper connector and the lower connector of the oil pump suspension belt. The first monitoring sensor can monitor the relative displacement between the belt body and the upper connector and the lower connector to monitor the connection between the upper connector and the lower connector and the belt body; the second monitoring sensor is arranged on the belt body. The second monitoring sensor can monitor the deformation of the belt body.

[0009] Preferably, the fracture monitoring device suitable for the suspension belt of the oil pumping unit also includes a control unit, and the monitoring unit is communicatively connected to the control unit. After receiving the information monitored by the monitoring unit, the control unit can be communicatively connected to the oil pumping unit to control the start and stop of the oil pumping unit.

[0010] Preferably, the monitoring unit is communicatively connected to the control unit using a signal conditioner.

[0011] Preferably, two groups of the first monitoring sensors are respectively provided at the connection between the upper connector and the lower connector and the belt body, and the first monitoring sensors are respectively located at the connection between the upper connector and the lower connector and the belt body, and are located at the edge of the belt body in the width direction; the connecting line of the four groups of the first monitoring sensors is a rectangle.

[0012] Preferably, the first monitoring sensor includes a first upper fixing member, a first lower fixing member, a first joint pressure plate and a first sensitive element, the first upper fixing member is connected to the upper connecting head / the lower connecting head, the first lower fixing member is connected to the belt body, the two ends of the first joint pressure plate are respectively connected to the first upper fixing member and the first lower fixing member, one end of the first sensitive element is connected to the first upper fixing member, and the other end is connected to the lower fixing member, the first sensitive element can monitor the displacement of the first upper fixing member and the first lower fixing member, so that the first monitoring sensor can monitor the relative displacement of the belt body and the upper connecting head and the lower connecting head.

[0013] Preferably, the second monitoring sensor includes a second upper fixing member, a second lower fixing member and a second sensitive element, the second upper fixing member and the second lower fixing member are both connected to the belt body, and the second upper fixing member and the second lower fixing member are respectively arranged close to the upper connecting head and the lower connecting head, the second sensitive element is connected to the second upper fixing member and the second lower fixing member, and the second sensitive element can monitor the displacement of the second upper fixing member and the second lower fixing member, so that the second monitoring sensor can monitor the deformation of the belt body.

[0014] Preferably, the number of the second monitoring sensors is multiple groups, and the second monitoring sensors are arranged along the width direction of the belt body.

[0015] Preferably, the number of the second monitoring sensors is two groups, and both of the second monitoring sensors are arranged close to the width edge of the belt body.

[0016] The present invention also provides a pumping unit suspension point belt, comprising a belt body and an upper connector and a lower connector arranged at both ends of the belt body, wherein the upper connector and the lower connector are both detachably connected to the belt body, and also comprises the above-mentioned fracture monitoring device suitable for the pumping unit suspension point belt.

[0017] The present invention also provides an oil pumping unit, comprising the above-mentioned oil pumping unit suspension point belt.

[0018] Compared with the related art, the present invention has achieved the following technical effects: the fracture monitoring device of the present invention is suitable for the suspension belt of the oil pumping unit, including a monitoring unit, the monitoring unit including a first monitoring sensor and a second monitoring sensor, the first monitoring sensor is arranged at the connection between the belt body and the upper connector and the lower connector of the suspension belt of the oil pumping unit, the first monitoring sensor can monitor the relative displacement between the belt body and the upper connector and the lower connector, so as to realize the monitoring of the connection status of the upper connector and the lower connector and the belt body; the second monitoring sensor is arranged on the belt body, and the second monitoring sensor can monitor the deformation of the belt body.

[0019] The present invention is suitable for a fracture monitoring device for a suspension belt of an oil pumping unit. The monitoring unit can monitor the deformation of the connection between the belt body of the suspension belt and the upper connector and the lower connector, and can also monitor the deformation of the belt body, thereby judging the deformation of the connection between the belt body of the suspension belt and the upper connector and the lower connector, and the belt body itself, thereby judging whether the suspension belt is broken, giving an early warning of the suspension belt break, and thus replacing the suspension belt before it breaks, effectively avoiding accidents caused by belt breakage, and improving the working safety and reliability of the oil pumping unit.

[0020] The present invention also provides a pumping unit suspension belt, including the aforementioned fracture monitoring device. Furthermore, the present invention also provides a pumping unit, including the aforementioned suspension belt, which monitors the suspension belt in advance to provide a fracture warning, thereby ensuring the normal operation of the pumping unit and avoiding accidents caused by belt fracture. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic structural diagram of a device for monitoring the fracture of a suspension belt of an oil pumping unit disclosed in an embodiment of the present invention;

[0023] Figure 2 This is a partial structural diagram of a device for monitoring the fracture of a suspension belt of an oil pumping unit disclosed in an embodiment of the present invention;

[0024] Figure 3 This is a schematic structural diagram of a suspension point belt disclosed in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the working principle of the oil pumping unit disclosed in an embodiment of the present invention.

[0026] In the figure: 1, first monitoring sensor; 101, first upper fixing member; 102, first lower fixing member; 103, first joint pressure plate; 104, first sensitive element;

[0027] 2. Second monitoring sensor; 201. Second upper fixing member; 202. Second lower fixing member; 203. Second sensitive element;

[0028] 3. Belt body;

[0029] 4. Upper connector;

[0030] 5. Lower connector;

[0031] 6. Monitoring unit;

[0032] 7. Signal conditioner;

[0033] 8. Control unit;

[0034] 9. Motor controller;

[0035] 10. Pumping well emergency stop controller;

[0036] 11. Cloud server;

[0037] 12. Mobile phones of relevant management personnel. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] The purpose of the present invention is to provide a pumping unit suspension belt and its fracture monitoring device and pumping unit, so as to solve the problems existing in the above-mentioned related technologies, monitor the deformation of the suspension belt, and thus predict the suspension belt before it breaks, avoid accidents caused by the suspension belt fracture, and improve the working reliability of the pumping unit.

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Example 1

[0042] This embodiment provides a fracture monitoring device for the suspension belt of an oil pumping unit. Figures 1-4 , including a monitoring unit 6, the monitoring unit 6 includes a first monitoring sensor 1 and a second monitoring sensor 2, the first monitoring sensor 1 is arranged at the connection between the belt body 3 and the upper connector 4 and the lower connector 5 of the oil pumping unit suspension belt, the first monitoring sensor 1 can monitor the relative displacement of the belt body 3 and the upper connector 4 and the lower connector 5, so as to monitor the connection status of the upper connector 4 and the lower connector 5 and the belt body 3; the second monitoring sensor 2 is arranged on the belt body 3, and the second monitoring sensor 2 can monitor the deformation of the belt body 3.

[0043] The present invention is suitable for a fracture monitoring device for a suspension belt of an oil pumping unit. The monitoring unit 6 can monitor the deformation of the connection between the belt body 3 of the suspension belt and the upper connector 4 and the lower connector 5. It can also monitor the deformation of the belt body 3, thereby judging the deformation of the connection between the belt body 3 of the suspension belt and the upper connector 4 and the lower connector 5, and the belt body 3 itself, thereby judging whether the suspension belt has fractured or there is a risk of fracture, and giving an early warning of the suspension belt fracture, so that the suspension belt can be replaced before it fractures, effectively avoiding accidents caused by belt fracture, and improving the working safety and reliability of the oil pumping unit.

[0044] It is important to explain that, through statistical analysis, surveys, and laboratory theoretical and experimental research, the primary locations where suspension belts break and fail are as follows: 1) near the lower joint of the suspension, accounting for over 80%; 2) at the other end of the suspension, accounting for approximately 10%; and 3) within the belt itself, accounting for less than 10%. Belt breakage accidents primarily occur at the connection between the belt and the suspension. Therefore, by inspecting the connection between the belt body 3 and the upper and lower connectors 4 and 5 of the suspension, the present invention can prevent most belt failures. Furthermore, theoretical and experimental research indicates that belt failure at a belt joint progresses from one side slipping and stretching, followed by overall slippage and fracture. The progression from unilateral slippage and stretching to overall fracture typically takes several hours to days. The length of deformation ranges from millimeters to centimeters. Therefore, by detecting the elongation of the belt body 3 at the joint, it is possible to provide early warning of belt failure and prevent the belt from breaking, allowing it to be replaced before it causes an accident.

[0045] The present invention is suitable for the fracture monitoring device of the suspension belt of the oil pumping unit, and further includes a control unit 8. The monitoring unit 6 is communicatively connected to the control unit 8. After receiving the information monitored by the monitoring unit 6, the control unit 8 can communicate with the oil pumping unit to control the start and stop of the oil pumping unit. When the monitoring unit 6 detects a change in the length of the belt body 3, it sends an early warning signal. After receiving the early warning signal, the control unit 8 controls the oil pumping unit to stop, thereby avoiding accidents caused by belt fracture. It should be explained here that the specific structure and working principle of the control unit 8 are common practices of those skilled in the art and will not be described in detail here.

[0046] The monitoring unit 6 is connected to the control unit 8 by means of a signal conditioner 7 to ensure that the information detected by the monitoring unit 6 can be smoothly transmitted to the control unit 8 .

[0047] Specifically, two sets of first monitoring sensors 1 are each installed at the connection points between the upper connector 4 and the lower connector 5 and the belt body 3. These first monitoring sensors 1 are located at the connection points between the upper connector 4 and the lower connector 5 and the belt body 3, and at the widthwise edges of the belt body 3. This allows the length changes of the belt body 3 to be detected from both sides of the widthwise connection points between the belt body 3 and the upper connector 4 and the lower connector 5. In this embodiment, the line connecting the four sets of first monitoring sensors 1 forms a rectangle. In other embodiments of the present invention, first monitoring sensors 1 may also be installed on both sides of the thicknesswise connection points between the belt body 3 and the upper connector 4 and the lower connector 5 to comprehensively monitor the deformation of the belt body 3.

[0048] In this specific embodiment, the first monitoring sensor 1 is a displacement sensor. The first monitoring sensor 1 includes a first upper fixing member 101, a first lower fixing member 102, a first joint pressure plate 103, and a first sensitive element 104. The first upper fixing member 101 is connected to the upper connector 4 / lower connector 5, and the first lower fixing member 102 is connected to the belt body 3. The first joint pressure plate 103 has two ends connected to the first upper fixing member 101 and the first lower fixing member 102, respectively. One end of the first sensitive element 104 is connected to the first upper fixing member 101, and the other end is connected to the lower fixing member. The first sensitive element 104 is capable of monitoring the displacement of the first upper fixing member 101 and the first lower fixing member 102, so that the first monitoring sensor 1 can monitor the relative displacement between the belt body 3 and the upper connector 4 and the lower connector 5. The first sensitive element 104 is used to monitor the displacement between the belt body 3 and the upper connector 4 / lower connector 5. When the displacement change is detected to reach the alarm threshold, the monitoring unit 6 sends a signal to the control unit 8 to transmit an early warning information. In other specific embodiments of the present invention, other types of sensors can also be used to monitor whether there is a risk of breakage of the belt body 3 by detecting the connection between the belt body 3 and the upper connector 4 / lower connector 5 and the force and deformation state of the belt body 3 itself.

[0049] Accordingly, the second monitoring sensor 2 includes a second upper fixing member 201, a second lower fixing member 202, and a second sensitive element 203. Both the second upper fixing member 201 and the second lower fixing member 202 are connected to the belt body 3, and are positioned near the upper connector 4 and the lower connector 5, respectively. The second sensitive element 203 is connected to the second upper fixing member 201 and the second lower fixing member 202. The second sensitive element 203 is capable of monitoring the displacement of the second upper fixing member 201 and the second lower fixing member 202, enabling the second monitoring sensor 2 to detect deformation of the belt body 3. The second sensitive element 203 can monitor changes in the length of the belt body 3, thereby determining deformation or breakage of the belt body 3. Similarly, when the elongation of the belt body 3 reaches a threshold set by the second monitoring sensor 2, the second monitoring sensor 2 transmits information to the control unit 8, which then issues a warning signal.

[0050] In practical applications, the number of the second monitoring sensors 2 can be set to multiple groups, and the second monitoring sensors 2 are arranged along the width direction of the belt body 3 to comprehensively monitor the length change of the belt body 3.

[0051] In this specific embodiment, there are two groups of second monitoring sensors 2, and both second monitoring sensors 2 are arranged near the width edge of the belt body 3. Since the cracking position of the belt body 3 is generally located at the edge, the two groups of second monitoring sensors 2 arranged in this specific embodiment are arranged at the width edge of the belt body 3 to monitor the length change of the edge of the belt body 3.

[0052] It should also be noted here that the threshold value set by the monitoring unit 6 can be determined according to the actual working conditions to meet different detection requirements and enhance the flexibility and adaptability of the device; at the same time, the first monitoring sensor 1 and the second monitoring sensor 2 are both equipped with built-in conversion elements to convert the physical quantity changes of the sensitive elements into electrical signals to realize the "measurement" function of the sensor. The specific structure of the conversion element, the setting and adjustment of the threshold value of the sensor are all common means used by technicians in this field and will not be repeated here.

[0053] Example 2

[0054] This embodiment provides a pumping unit suspension belt, including a belt body 3 and an upper connector 4 and a lower connector 5 arranged at both ends of the belt body 3. The upper connector 4 and the lower connector 5 are both detachably connected to the belt body 3, and also includes the fracture monitoring device suitable for the pumping unit suspension belt of embodiment one.

[0055] The breakage monitoring device is used to monitor the length change of the suspension point belt to avoid accidents caused by belt breakage to the greatest extent.

[0056] Example 3

[0057] This embodiment provides an oil pumping unit, including the oil pumping unit suspension belt of the second embodiment.

[0058] In practice, after monitoring unit 6 sends a signal, it is transmitted via signal conditioner 7 to control unit 8. Control unit 8 controls motor controller 9, which in turn controls pumping well emergency stop controller 10, shutting down the pumping well to prevent accidents caused by belt breakage. Simultaneously, control unit 8 sends a command to the relevant management cloud server 11, which sends a message to the relevant management personnel's mobile phone 12 and information platform, indicating that the pumping unit is shut down for repair due to impending belt breakage at the suspension point. This provides immediate time for maintenance and recovery of the pumping unit.

[0059] The present invention utilizes a fracture monitoring device to monitor belt length changes, thereby solving the problem of accidents caused by belt breakage in beamless pumping units that currently use belts as flexible parts, and greatly improving the reliability of the beamless pumping units.

[0060] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A fracture monitoring device for a suspension belt of an oil pumping unit, characterized in that: include: The monitoring unit includes a first monitoring sensor and a second monitoring sensor. The first monitoring sensor is arranged at the connection between the belt body and the upper connector and the lower connector of the oil pump suspension belt. The first monitoring sensor can monitor the relative displacement between the belt body and the upper connector and the lower connector to monitor the connection between the upper connector and the lower connector and the belt body; the second monitoring sensor is arranged on the belt body. The second monitoring sensor can monitor the deformation of the belt body.

2. The fracture monitoring device for the suspension belt of an oil pumping unit according to claim 1 is characterized in that: It also includes a control unit, the monitoring unit is communicatively connected to the control unit, and the control unit can communicate with the oil pumping unit after receiving the information monitored by the monitoring unit to control the start and stop of the oil pumping unit.

3. The fracture monitoring device for the suspension belt of an oil pumping unit according to claim 2 is characterized in that: The monitoring unit is communicatively connected with the control unit via a signal conditioner.

4. The device for monitoring the fracture of a suspension belt of an oil pumping unit according to any one of claims 1 to 3, characterized in that: Two groups of the first monitoring sensors are respectively provided at the connection points between the upper connector and the lower connector and the belt body. The first monitoring sensors are respectively located at the connection points between the upper connector and the lower connector and the belt body, and are located at the edge of the belt body in the width direction; the connecting line of the four groups of the first monitoring sensors is a rectangle.

5. The fracture monitoring device for the suspension belt of an oil pumping unit according to claim 4 is characterized in that: The first monitoring sensor includes a first upper fixing member, a first lower fixing member, a first joint pressure plate and a first sensitive element. The first upper fixing member is connected to the upper connecting head / the lower connecting head, the first lower fixing member is connected to the belt body, the two ends of the first joint pressure plate are respectively connected to the first upper fixing member and the first lower fixing member, one end of the first sensitive element is connected to the first upper fixing member, and the other end is connected to the lower fixing member. The first sensitive element can monitor the displacement of the first upper fixing member and the first lower fixing member, so that the first monitoring sensor can monitor the relative displacement of the belt body and the upper connecting head and the lower connecting head.

6. The fracture monitoring device for the suspension belt of an oil pumping unit according to claim 1 is characterized in that: The second monitoring sensor includes a second upper fixing member, a second lower fixing member and a second sensitive element. The second upper fixing member and the second lower fixing member are both connected to the belt body, and the second upper fixing member and the second lower fixing member are respectively arranged close to the upper connecting head and the lower connecting head. The second sensitive element is connected to the second upper fixing member and the second lower fixing member. The second sensitive element can monitor the displacement of the second upper fixing member and the second lower fixing member, so that the second monitoring sensor can monitor the deformation of the belt body.

7. The fracture monitoring device for the suspension belt of an oil pumping unit according to claim 6, characterized in that: The number of the second monitoring sensors is multiple, and the second monitoring sensors are arranged along the width direction of the belt body.

8. The fracture monitoring device for the suspension belt of an oil pumping unit according to claim 7 is characterized in that: The number of the second monitoring sensors is two groups, and both of the second monitoring sensors are arranged close to the width edge of the belt body.

9. A pumping unit suspension belt, comprising a belt body and an upper connector and a lower connector provided at both ends of the belt body, wherein the upper connector and the lower connector are both detachably connected to the belt body, and characterized in that: It also includes a fracture monitoring device for a suspension belt of an oil pumping unit as described in any one of claims 1 to 8.

10. A pumping unit, characterized in that: Including the oil pumping unit suspension point belt as described in claim 9.

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