A power supply protection device for an oil production system

Abstract

This utility model discloses a backflow prevention safety protection device for oil production systems, relating to the technical field of oil production systems. It includes: an active component, a driven component, and a backflow prevention assembly. The active component has a cavity. The backflow prevention assembly is installed within the cavity. One end of the driven component is installed within the cavity. The backflow prevention assembly includes: two swing blocks, two springs, and two friction plates. The two swing blocks are rotatably connected to the active component. The two ends of the two springs are fixedly connected to the two swing blocks. The two friction plates are fixedly installed on the outer arc surfaces of the two swing blocks. Under the action of the backflow prevention assembly, when the motor drives the active component to rotate, the two swing blocks, under the action of centrifugal force, stretch the two springs, causing the friction plates to contact the friction rings. Under the action of friction, the driven component begins to rotate synchronously with the active component. When the motor stops, the oil pump cannot drive the motor to rotate, thus improving the safety and dexterity of the protection device.

Description

Technical Field

[0001] This utility model relates to the field of oil production system technology, specifically to a power supply protection device for oil production systems. Background Technology

[0002] In the oil extraction field, the production system is like the heart of the entire production process, continuously providing power for oil extraction and transportation. Its operational safety and stability are not only the cornerstone of efficient oilfield production but also directly impact the economic and social benefits of the entire oilfield industry chain. With the continuous growth of global energy demand and the constant innovation of oilfield extraction technology, the depth and breadth of oilfield extraction are expanding daily, making the operating conditions faced by the production system increasingly complex and severe. Against this backdrop, power supply and protection, as a crucial link in the normal operation of the production system, are becoming increasingly important. A power outage can have unimaginable consequences. It not only causes equipment shutdowns, like a car suddenly breaking down at high speed, bringing production to a standstill, but also severely impacts the overall production plan of the oilfield, disrupting the originally orderly production rhythm. Even more seriously, power outages can also trigger serious safety accidents such as fires and explosions, causing devastating damage to equipment, posing a huge threat to personnel safety, and bringing incalculable economic losses to the oilfield.

[0003] Currently, most oil extraction systems use permanent magnet motors. When the motor stops, the oil pump rotates due to the gravity of the liquid column, which in turn drives the permanent magnet motor. In this case, the permanent magnet motor is equivalent to a generator, generating high-voltage electricity that returns to shore, which can easily cause electric shock accidents.

[0004] In view of this, this application proposes a power outage protection device for oil production systems. Utility Model Content

[0005] The purpose of this utility model is to provide a power outage protection device for oil production systems, addressing the problem that current oil production systems mostly use permanent magnet motors. When the motor stops, the weight of the liquid column drives the oil pump to rotate, simultaneously driving the permanent magnet motor. In this situation, the permanent magnet motor acts as a generator, generating high-voltage electricity that returns to shore, easily causing electric shock accidents. The technical solution adopted by this utility model is as follows:

[0006] A backflow prevention safety protection device for an oil production system includes: an active component, a driven component, and a backflow prevention assembly. The active component has a cavity. The backflow prevention assembly is installed inside the cavity. One end of the driven component is installed inside the cavity. The backflow prevention assembly includes: two swing blocks, two springs, and two friction plates. The two swing blocks are rotatably connected to the active component. The two ends of the two springs are fixedly connected to the two swing blocks. The two friction plates are fixedly installed on the outer arc surfaces of the two swing blocks.

[0007] In the above technical solution, the driving component is fixedly connected to the output end of the permanent magnet motor, and the driven component is fixedly connected to the shaft of the oil pump. When the permanent magnet motor drives the driving component to rotate, the two swing blocks, under the action of centrifugal force, stretch the two springs respectively, causing the friction plates to contact the friction ring. As the rotational speed further increases, the pressure of the swing blocks on the driven component continues to increase, and the friction between them also continuously increases. Because the friction ring is fixedly connected to the driven component, when the friction is sufficient to overcome the load resistance of the working machinery connected to the driven component, the driven component begins to rotate synchronously with the driving component, completing the engagement. Power is transmitted from the driving component to the driven component through the swing blocks, driving the working machinery to operate normally. If the load on the driven component suddenly increases significantly, exceeding the torque transmission capacity of the anti-feedback component, slippage will occur between the swing blocks and the friction ring, that is, the rotational speed of the driven component will be lower than that of the driving component, thereby preventing the equipment from being damaged due to overload and playing an overload protection role. When the speed of the active component decreases, the centrifugal force on the swing block decreases. When the centrifugal force is less than the spring force, the spring force causes the swing block to swing inward and reset, separating from the friction ring. Power transmission is interrupted. When the motor stops, the oil pump cannot drive the motor to rotate, thus improving the safety and dexterity of the anti-power-out protection device.

[0008] A further improvement of this utility model is that it also includes a friction ring. The friction ring is fixedly installed inside the driven member.

[0009] By adopting the above technical solution, the friction ring can increase the friction force, which can better enable the friction plate to drive the driven part to work.

[0010] A further improvement of this utility model is that it also includes a plunger body. The driving component is also provided with a plunger hole. The plunger body is installed in the plunger hole. The plunger body is screwed to the driving component.

[0011] Using the above technical solution, when the driving component is installed at the motor output end, rotating the plunger body causes it to move inward, with one end entering the annular groove on the motor shaft, forming a mechanical interlock. This enhances the stability of the connection between the driving component and the motor, preventing loosening of the connection due to motor vibration. When disconnecting the driving component from the motor, rotating the plunger body in the opposite direction allows one end to enter the cavity. Even if the motor shaft does not have an annular groove, the arc surface of one end of the plunger still fits against the motor shaft, further increasing the stability of the connection between the driving component and the motor.

[0012] A further improvement of this utility model is that it also includes a knob. The knob is fixedly connected to one end of the outer side of the plunger body.

[0013] The above technical solution allows for easy rotation of the plunger body via a knob.

[0014] A further improvement of this utility model is that it also includes a temperature sensor. The temperature sensor is fixedly installed inside the cavity.

[0015] Using the above technical solution, the temperature sensor is used to monitor the temperature inside the cavity.

[0016] A further improvement of this utility model is that the outer diameter of the driven member is smaller than the inner diameter of the driving member.

[0017] A further improvement of this utility model is that the active component is also provided with a mounting hole. The mounting hole is located on the moving path of the plunger body.

[0018] Using the above technical solution, the driving component can be mounted on the motor shaft through the mounting hole.

[0019] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0020] 1. This utility model provides a power backflow prevention safety protection device for oil production systems. The active component is fixedly connected to the output end of a permanent magnet motor, and the driven component is fixedly connected to the rotating shaft of the oil pump. When the permanent magnet motor drives the active component to rotate, the two swing blocks, under the action of centrifugal force, stretch the two springs respectively, causing the friction plates to contact the friction ring. As the rotational speed further increases, the pressure of the swing blocks on the driven component continues to increase, and the friction between the two also continuously increases. Because the friction ring is fixedly connected to the driven component, when the friction is sufficient to overcome the load resistance of the working machinery connected to the driven component, the driven component begins to rotate synchronously with the active component, completing the engagement. Power is transmitted from the active component to the driven component through the swing blocks, driving the working machinery to operate normally. If the load on the driven component suddenly increases significantly, exceeding the torque transmission capacity of the power backflow prevention component, slippage will occur between the swing blocks and the friction ring, that is, the rotational speed of the driven component will be lower than that of the active component, thereby preventing equipment damage due to overload and playing an overload protection role. When the speed of the active component decreases, the centrifugal force on the swing block decreases. When the centrifugal force is less than the spring force, the spring force causes the swing block to swing inward and reset, separating from the friction ring. Power transmission is interrupted. When the motor stops, the oil pump cannot drive the motor to rotate, thus improving the safety and dexterity of the protection device.

[0021] 2. This utility model provides a power outage prevention safety protection device for oil production systems. When the active component is installed at the motor output end, rotating the knob drives the plunger body to rotate, causing the plunger body to move inward. One end of the plunger body enters the annular groove on the motor shaft, forming a mechanical interlock. This can enhance the stability of the connection between the active component and the motor, prevent the connection between the active component and the motor from loosening due to motor vibration, and improve the stability of the protection device operation. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 3 This is a partial structural schematic diagram of the present invention;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the anti-feedback component;

[0027] Figure 5 This is a schematic diagram of another part of the structure of this utility model;

[0028] Figure 6 This is another cross-sectional structural diagram of the present invention;

[0029] In the diagram: 1. Driving component; 2. Driven component; 3. Cavity; 4. Anti-feedback assembly; 41. Swing block; 42. Spring; 43. Friction plate; 5. Friction ring; 6. Piston hole; 7. Piston body; 8. Knob; 9. Mounting hole; 10. Temperature sensor. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to embodiments:

[0031] Example 1

[0032] like Figures 1-6 As shown, this utility model provides a power backflow prevention safety protection device for an oil production system, including an active component 1, a driven component 2, a power backflow prevention assembly 4, and a friction ring 5. It may also include a plunger body 7, a knob 8, and a temperature sensor 10.

[0033] The driving member 1 has a cavity 3. An anti-backlash assembly 4 is installed within the cavity 3. One end of the driven member 2 is installed within the cavity 3. The anti-backlash assembly 4 includes: two swing blocks 41, two springs 42, and two friction plates 43. The two swing blocks 41 are rotatably connected to the driving member 1. Both ends of the two springs 42 are fixedly connected to the two swing blocks 41. The two friction plates 43 are fixedly installed on the outer arc surfaces of the two swing blocks 41. A friction ring 5 is fixedly installed on the inner side of the driven member 2. The outer diameter of the driven member 2 is smaller than the inner diameter of the driving member 1. The driving component 1 can be fixedly connected to the output end of the permanent magnet motor, and the driven component 2 is fixedly connected to the shaft of the oil pump. When the permanent magnet motor drives the driving component 1 to rotate, the two swing blocks 41, under the action of centrifugal force, stretch the two springs 42 respectively, causing the friction plate 43 to contact the friction ring 5. As the rotation speed further increases, the pressure of the swing blocks 41 on the driven component 2 continues to increase, and the friction between the two also continues to increase. Because the friction ring 5 is fixedly connected to the driven component 2, when the friction is sufficient to overcome the load resistance of the working machinery connected to the driven component 2, the driven component 2 begins to rotate synchronously with the driving component 1, completing the engagement. Power is transmitted from the driving component 1 to the driven component 2 through the swing blocks 41, driving the working machinery to operate normally. If the load on the driven component 2 suddenly increases significantly, exceeding the torque transmission capacity of the anti-feedback component 4, slippage will occur between the swing blocks 41 and the friction ring 5, that is, the rotation speed of the driven component 2 will be lower than that of the driving component 1, thereby preventing the equipment from being damaged due to overload and playing an overload protection role. When the rotational speed of the active component 1 decreases, the centrifugal force on the swing block 41 decreases. When the centrifugal force is less than the force of the spring 42, the force of the spring 42 causes the swing block 41 to swing inward and reset, separating from the friction ring 5. Power transmission is interrupted, and when the motor stops, the oil pump cannot drive the motor to rotate, thus improving the safety and dexterity of the anti-power-out protection device. The friction plate 43 and the friction ring 5 can be made of copper-based alloy material. Copper-based alloy has an extremely high thermal conductivity. During the friction process, a large amount of heat is generated when the friction ring 5 contacts the friction plate 43. If the heat cannot be dissipated in time, it will lead to material softening, thermal stress concentration, or even thermal failure. The high thermal conductivity of copper-based alloy can quickly conduct heat to the surrounding medium, reducing the operating temperature of the friction pair, thereby reducing thermal wear and thermal fatigue damage. Copper-based alloy can maintain a relatively stable coefficient of friction during the friction process and is less affected by ambient temperature, pressure, and sliding speed. Copper-based alloy has a low wear rate and can withstand long-term high-load operation, reducing maintenance frequency and costs. Copper-based alloys exhibit superior damping properties compared to steel and cast iron, effectively absorbing vibrations and noise generated during friction. They also possess strong impact resistance, maintaining structural integrity under transient loads and preventing cracking or spalling caused by impact.

[0034] In the anti-corrosion assembly 4, apart from the friction plate 43, all other components can be made of stainless steel, a material with excellent performance. In harsh environments such as humidity and acid / alkali conditions, ordinary metals are prone to oxidation, rust, and other corrosion, affecting not only appearance but also reducing strength and lifespan. However, the alloying elements such as chromium added to stainless steel form a dense oxide film on its surface, effectively preventing external corrosive media from contacting the base metal, thus greatly improving the material's corrosion resistance. Using stainless steel can significantly reduce corrosion damage, lower maintenance costs, extend equipment lifespan, and ensure the safety and stability of the production process. Stainless steel also possesses high strength and good toughness, maintaining structural integrity and stability under heavy loads and impacts. Stainless steel components can withstand high loads and complex stresses, ensuring efficient operation of machinery. Stainless steel components can operate stably for extended periods under harsh conditions of high temperature, high pressure, and high speed. Stainless steel is aesthetically pleasing and easy to maintain. Furthermore, stainless steel has good machinability and recyclability. It can be processed into products of various shapes and sizes to meet the needs of different fields.

[0035] The driving component 1 also has a plunger hole 6. A plunger body 7 is installed inside the plunger hole 6. The plunger body 7 is screwed to the driving component 1. A knob 8 is fixedly connected to one end of the outer side of the plunger body 7. The driving component 1 also has a mounting hole 9. The mounting hole 9 is located on the movement path of the plunger body 7. The driving component 1 can be installed on the shaft at the motor output end through the mounting hole. When the driving component 1 is installed at the motor output end, rotating the knob 8 rotates the plunger body 7, causing it to move inward. One end of the plunger body 7 enters the annular groove on the motor shaft, forming a mechanical interlock. This enhances the stability of the connection between the driving component 1 and the motor, preventing the connection from loosening due to motor vibration. To disconnect the driving component 1 from the motor, rotate the knob 8 in the opposite direction, causing the knob 8 to rotate the plunger body 7, thus allowing one end of the plunger body 7 to enter the plunger hole 6. Even if the motor shaft does not have an annular groove, the arc surface of one end of the plunger still fits against the motor shaft, further increasing the stability of the connection between the driving component 1 and the motor.

[0036] Temperature sensor 10 is fixedly installed inside cavity 3. Temperature sensor 10 is used to monitor the temperature inside cavity 3 in real time. When the temperature inside cavity 3 is too high, an alarm can be triggered to prevent the temperature from affecting the normal operation of the protection device.

[0037] The working principle of this type of anti-power-out safety protection device for oil production systems will be explained in detail below.

[0038] like Figures 1-6As shown, the driving component 1 can be fixedly connected to the output end of the permanent magnet motor, and the driven component 2 is fixedly connected to the rotating shaft of the oil pump. When the permanent magnet motor drives the driving component 1 to rotate, the two swing blocks 41, under the action of centrifugal force, stretch the two springs 42 respectively, causing the friction plate 43 to contact the friction ring 5. As the rotation speed further increases, the pressure of the swing blocks 41 on the driven component 2 continues to increase, and the friction between the two also continues to increase. Because the friction ring 5 is fixedly connected to the driven component 2, when the friction is sufficient to overcome the load resistance of the working machinery connected to the driven component 2, the driven component 2 begins to rotate synchronously with the driving component 1, completing the engagement. Power is transmitted from the driving component 1 to the driven component 2 through the swing blocks 41, driving the working machinery to operate normally. If the load on the driven component 2 suddenly increases significantly, exceeding the torque transmission capacity of the anti-feedback component 4, slippage will occur between the swing blocks 41 and the friction ring 5, that is, the rotation speed of the driven component 2 will be lower than that of the driving component 1, thereby preventing the equipment from being damaged due to overload and playing an overload protection role. When the rotational speed of the active component 1 decreases, the centrifugal force on the swing block 41 decreases. When the centrifugal force is less than the force of the spring 42, the force of the spring 42 causes the swing block 41 to swing inward and reset, separating from the friction ring 5, thus interrupting power transmission. When the motor stops, the oil pump cannot drive the motor to rotate, improving the safety and dexterity of the protection device. When the active component 1 is installed at the motor output end, rotating the knob 8 drives the plunger body 7 to rotate, causing the plunger body 7 to move inward. One end of the plunger body 7 enters the annular groove on the motor shaft, forming a mechanical interlock. This enhances the stability of the connection between the active component 1 and the motor, preventing the connection between the active component 1 and the motor from loosening due to motor vibration. To disconnect the connection between the active component 1 and the motor, rotate the knob 8 in the opposite direction, causing the knob 8 to drive the plunger body 7 to rotate, thus allowing one end of the plunger body 7 to enter the plunger hole 6. In summary, this protection device is safe and dexterous.

[0039] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An anti-feedthrough safety protection device for use in an oil production system, characterized by, include: The active component (1), the driven component (2), and the anti-feedback assembly (4) are provided with a cavity (3); the anti-feedback assembly (4) is installed in the cavity (3); one end of the driven component (2) is installed in the cavity (3); the anti-feedback assembly (4) includes: two swing blocks (41), two springs (42), and two friction plates (43); the two swing blocks (41) are rotatably connected to the active component (1); the two ends of the two springs (42) are fixedly connected to the two swing blocks (41); the two friction plates (43) are fixedly installed on the outer arc surface of the two swing blocks (41).

2. The anti-feedthrough safety protection device for an oil extraction system according to claim 1, characterized in that, It also includes a friction ring (5); the friction ring (5) is fixedly installed inside the driven member (2).

3. The anti-feedthrough safety protection device for an oil extraction system according to claim 2, characterized in that, It also includes a plunger body (7); the driving member (1) is also provided with a plunger hole (6); the plunger body (7) is installed in the plunger hole (6); the plunger body (7) is screwed to the driving member (1).

4. The anti-power-outage safety protection device for an oil production system according to claim 3, characterized in that, It also includes a knob (8); the knob (8) is fixedly connected to one end of the outer side of the plunger body (7).

5. A power supply protection device for an oil production system according to claim 3, characterized in that, It also includes a temperature sensor (10); the temperature sensor (10) is fixedly installed inside the cavity (3).

6. The anti-power-outage safety protection device for an oil production system according to claim 1, characterized in that, The outer diameter of the driven member (2) is smaller than the inner diameter of the driving member (1).

7. A power supply protection device for an oil production system according to claim 3, characterized in that, The active component (1) is also provided with a mounting hole (9); the mounting hole (9) is located on the moving path of the plunger body (7).

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