A PUMPING UNIT USING A CONCENTRIC DUAL-AXIS DRIVE CONTROL DEVICE

Abstract

This invention relates to the technical field of oil collection devices, and specifically discloses a pumping unit using a concentric dual-axis drive control device, comprising a base and a transmission chain set on a wellhead; a box-type derrick, a power motor and a reducer are fixedly set on the base, a platform is fixedly set on the top end of the box-type derrick, a drum and an upper sprocket are rotatably set on the platform, a lower sprocket is fixedly set on the output shaft of the reducer, the transmission chain transmits and connects the upper sprocket and the lower sprocket, and is fixedly connected with a balance weight, a transmission belt is set on the drum, one end of the transmission belt connects the balance weight, and the other end connects a sucker rod, the power motor transmits and connects the reducer, this invention solves the problem of high energy consumption of the conventional beam pumping unit in the existing technology.

Description

TECHNICAL FIELD

This invention relates to the technical field of oil collection devices, especially to a pumping unit using a concentric dual-axis drive control device.

BACKGROUND TECHNOLOGY

In the field of oil extraction, to pump oil from deep underground to the oil pipeline and then send it to the transfer station, a pumping unit is needed first. The most widely used pumping unit in China is the beam reciprocating type, which converts the circular motion of the electric motor into the up and down linear motion of the sucker rod, thus achieving the extraction of oil.

However, the system efficiency of the traditional beam pumping unit is low, and it usually directly converts the rotation of the electric motor into the up and down linear motion of the sucker rod, which requires the electric motor to exert a large power to pull the sucker rod, resulting in high energy consumption.

SUMMARY OF THE INVENTION

To solve the technical problem of high energy consumption of the traditional beam pumping unit, this invention provides a pumping unit using a concentric dual-axis drive control device.

The technical solution adopted by this invention to solve its technical problem is:

A pumping unit using a concentric dual-axis drive control device, comprising a base set on a wellhead, a box-type derrick fixedly set on the base, and a platform fixedly set on the top end of the box-type derrick, further comprising a lower power mechanism, the lower power mechanism comprises a power motor, a reducer, a brake, an upper sprocket, a transmission chain, a lower sprocket and a balance weight; the power motor, the reducer and the brake are all fixed on the base, and are all located below the box-type derrick, the brake connects the power motor and the reducer, a drum and an upper sprocket are rotatably set on the platform, the lower sprocket is fixedly connected to the output shaft of the reducer, the transmission chain transmits and connects the upper sprocket and the lower sprocket, and is fixedly connected to the balance weight, a transmission belt is set on the drum, one end of the transmission belt connects the balance weight, and the other end connects a sucker rod.

Further, an upper hook and a lower hook are set on the balance weight, the transmission chain connects the upper hook and the lower hook.

Further, a first belt clamp is set on the sucker rod, a second belt clamp is set on the balance weight, the two ends of the transmission belt respectively connect the first belt clamp and the second belt clamp.

Further, the power motor is a reversible motor that can rotate forward and backward.

Further, a support rod is fixedly set on the base, the support rod is fixedly connected to the box-type derrick.

Further, a cylinder seat is fixedly set on the wellhead, a telescopic cylinder is fixedly set on the cylinder seat, the free end of the telescopic cylinder is fixedly connected to the base.

Further, the reducer is a dual-axis reducer, the number of the upper sprocket, the lower sprocket and the transmission chain are all two.

Further, a ladder is fixedly set on the box-type derrick, a guardrail is fixedly set on the platform, a protective cover with a bottom opening is fixedly set on the platform, the drum is located inside the protective cover.

Further, it further comprises a safety mechanism, the safety mechanism comprises a connecting rod, a sliding rod and two limit arc-shaped plates, both ends of the ladder are provided with sliding grooves, two sliding plates are slidably set in the sliding grooves, protruding rods are fixedly set on the sliding plates, the connecting rod and the sliding rod are both fixedly connected to the two protruding rods, both ends of the two limit arc-shaped plates are rotatably connected to the sliding rod, and the other end is detachably connected to the connecting rod.

Further, both ends of the connecting rod are fixedly provided with fixed plates, positioning holes are provided on the fixed plates, telescopic holes are provided on the limit arc-shaped plates, telescopic springs are fixedly set in the telescopic holes, and positioning rods are slidably set, the telescopic springs are fixedly connected to the positioning rods, the positioning rods are slidably connected to the positioning holes.

The beneficial effects of this invention are:

• • 1. This invention adopts a balance weight, an upper sprocket, a lower sprocket, a transmission chain, a transmission belt and a drum to achieve the balance of the weight of the sucker rod and part of the oil-water mixture with the weight of the balance weight, which allows the power motor to use a smaller power to drive the up and down linear motion of the sucker rod, reducing the energy consumption and solving the problem of high energy consumption of the traditional beam pumping unit;
  • 2. This invention adopts a power motor, a reducer and a brake placed on the base at the lower end of the box-type derrick, which can facilitate the equipment debugging and maintenance, and the platform has fewer devices, which also reduces the number of devices that need to be maintained on the platform, thereby reducing the number of times that the maintenance personnel climb to the platform;
  • 3. This invention adopts an upper sprocket, a lower sprocket and a transmission chain, which have a longer service life than the triangular belt transmission device used by the traditional beam pumping unit, and do not need to frequently replace the parts of the triangular belt transmission device, reducing the maintenance cost;
  • 4. This invention adopts a telescopic cylinder, which can push the base and the devices on it, avoiding the use of large cranes when repairing and moving the well.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the structure of a pumping unit using a concentric dual-axis drive control device in embodiment one of this invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a schematic diagram of the transmission structure of the balance weight in FIG. 1;

FIG. 4 is a schematic diagram of the transmission structure of the sucker rod in FIG. 2;

FIG. 5 is a schematic diagram of the guiding structure of the balance weight in FIG. 1;

FIG. 6 is a side sectional view of the ladder and the safety mechanism in embodiment two of this invention;

FIG. 7 is a schematic diagram of the structure of the safety mechanism in FIG. 6;

FIG. 8 is a side sectional view of the safety mechanism in FIG. 7;

FIG. 9 is a schematic diagram of the structure of the sliding plate and the protruding rod in FIG. 7;

FIG. 10 is a schematic diagram of the structure of the limit arc-shaped plate, the telescopic spring and the positioning rod in FIG. 7.

• • Wherein, 1—reducer, 2—lower sprocket, 3—transmission chain, 4—lower hook, 5—balance weight, 6—upper hook, 7—transmission belt, 8—suspender, 9—first belt clamp, 10—drum, 11—base, 12—box-type derrick, 13—guiding roller, 14—upper sprocket, 15—guardrail, 16—brake, 17—coupling, 18—power motor, 19—telescopic cylinder, 20—support rod, 21—ladder, 22—platform, 23—protective cover, 24—second belt clamp, 25—cylinder seat, 26—wellhead, 27—protruding rod, 28—connecting rod, 29—limit arc-shaped plate, 30—elastic layer, 31—sliding plate, 32—sliding groove, 33—fixed plate, 34—positioning rod, 35—telescopic spring, 36—telescopic hole.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In order to deepen the understanding of this invention, the following will further describe this invention in detail in conjunction with the drawings and embodiments, which are only for explaining this invention, and do not constitute a limitation on the scope of protection of this invention.

Embodiment One

The specific implementation process of this invention: a pumping unit using a concentric dual-axis drive control device, as shown in FIGS. 1-5, comprising a base 11 set on a wellhead 26, a box-type derrick 12 fixedly set on the base 11, and a platform 22 fixedly set on the top end of the box-type derrick 12, further comprising a lower power mechanism, the lower power mechanism comprises a power motor 18, a reducer 1, a brake 16, an upper sprocket 14, a transmission chain 3, a lower sprocket 2 and a balance weight 5; the power motor 18, the reducer 1 and the brake 16 are all fixed on the base 11, and are all located below the box-type derrick 12, the brake 16 connects the power motor 18 and the reducer 1, a drum 10 and an upper sprocket 14 are rotatably set on the platform 22, the lower sprocket 2 is fixedly connected to the output shaft of the reducer 1, the transmission chain 3 transmits and connects the upper sprocket 14 and the lower sprocket 2, and is fixedly connected to the balance weight 5, a transmission belt 7 is set on the drum 10, one end of the transmission belt 7 connects the balance weight 5, and the other end connects a sucker rod.

When the sucker rod needs to move up and down, the staff starts the power motor 18, the power motor 18 drives the lower sprocket 2 to rotate through the reducer 1, the lower sprocket 2 drives the upper sprocket 14 to rotate through the transmission chain 3, meanwhile the transmission chain 3 moves the balance weight 5 downward, the balance weight 5 pulls one end of the transmission belt 7 downward, the transmission belt 7 slidably connects the drum 10, the other end of the transmission belt 7 moves the sucker rod upward together; the power motor 18 reverses, then the balance weight 5 moves upward, the transmission belt 7 makes the sucker rod move downward, the forward and backward rotation of the power motor 18 can drive the up and down linear motion of the sucker rod, a suspender 8 can be set on the sucker rod, a guiding roller 13 can be fixedly set on the balance weight 5, the guiding roller 13 rolls and connects the box-type derrick 12, a protective cover 23 can be set on the base 11, for protecting the lower power mechanism, the brake 16 connects the output shaft of the power motor 18 and the input shaft of the reducer 1, the output shaft of the power motor 18 and the brake 16 can be connected by a coupling 17, the brake 16 can brake the reducer 1 when maintaining the device or in case of emergency, improving the safety of the maintenance personnel.

As shown in FIG. 1, an upper hook 6 and a lower hook 4 are set on the balance weight 5, the transmission chain 3 connects the upper hook 6 and the lower hook 4.

A nut and a screw are set on the upper hook 6, the transmission chain 3 can be tightened by tightening the nut, the balance weight 5 and the transmission chain 3 can be connected by the upper hook 6 and the lower hook 4.

As shown in FIGS. 1 and 4, a first belt clamp 9 is set on the sucker rod, a second belt clamp 24 is set on the balance weight 5, the two ends of the transmission belt 7 respectively connect the first belt clamp 9 and the second belt clamp 24.

The transmission belt 7 and the balance weight 5 can be connected by the second belt clamp 24, the sucker rod and the transmission belt 7 can be connected by the first belt clamp 9.

The power motor 18 is a reversible motor that can rotate forward and backward.

The reversible motor can facilitate the power motor 18 to drive the lower sprocket 2 to rotate forward and backward, thereby moving the balance weight 5 and the sucker rod up and down.

As shown in FIG. 2, a support rod 20 is fixedly set on the base 11, the support rod 20 is fixedly connected to the box-type derrick 12.

The support rod 20 can support and pull the box-type derrick 12, improving the stability of the position of the box-type derrick 12.

As shown in FIG. 2, a cylinder seat 25 is fixedly set on the wellhead 26, a telescopic cylinder 19 is fixedly set on the cylinder seat 25, the free end of the telescopic cylinder 19 is fixedly connected to the base 11.

When the base 11 needs to be moved, the staff starts the telescopic cylinder 19, the free end of the telescopic cylinder 19 moves the base 11 and the sucker rod, and moves away from the wellhead 26 and the well mouth, achieving the well repair and moving.

As shown in FIGS. 1 and 2, the reducer 1 is a dual-axis reducer 1, the number of the upper sprocket 14, the lower sprocket 2 and the transmission chain 3 are all two.

The number of the upper sprocket 14, the lower sprocket 2 and the transmission chain 3 are all two, which can pull both ends of the balance weight 5, improving the stability of the balance weight 5 when moving up and down.

As shown in FIG. 2, a ladder 21 is fixedly set on the box-type derrick 12, a guardrail 15 is fixedly set on the platform 22, a protective cover 23 with a bottom opening is fixedly set on the platform 22, the drum 10 is located inside the protective cover 23.

The ladder 21 can facilitate the maintenance personnel to climb to the platform 22 for equipment maintenance, the guardrail 15 can protect the maintenance personnel when maintaining the equipment, improving the safety of the maintenance personnel, the protective cover 23 can protect the drum 10, improving the safety of the drum 10, the transmission belt 7 can move from the bottom opening of the protective cover 23.

Embodiment Two

The difference from embodiment one is that:

A pumping unit using a concentric dual-axis drive control device, as shown in FIGS. 6-9, further comprises a safety mechanism, the safety mechanism comprises a connecting rod 28, a sliding rod and two limit arc-shaped plates 29, both ends of the ladder 21 are provided with sliding grooves 32, two sliding plates 31 are slidably set in the sliding grooves 32, protruding rods 27 are fixedly set on the sliding plates 31, the connecting rod 28 and the sliding rod are both fixedly connected to the two protruding rods 27, both ends of the two limit arc-shaped plates 29 are rotatably connected to the sliding rod, and the other end is detachably connected to the connecting rod 28.

When the maintenance personnel need to climb the ladder 21, the maintenance personnel first detach the connection between one limit arc-shaped plate 29 and the connecting rod 28, then the maintenance personnel enter between the two limit arc-shaped plates 29, and reconnect the limit arc-shaped plate 29 that is separated from the connecting rod 28 to the connecting rod 28, making the abdomen and the back of the maintenance personnel respectively press against the two limit arc-shaped plates 29, thus forming the two limit arc-shaped plates 29 to limit the maintenance personnel, when the maintenance personnel climb the ladder 21, the two limit arc-shaped plates 29 will move up or down with the maintenance personnel together with the sliding rod, the connecting rod 28 and the four protruding rods 27, the four protruding rods 27 will move the four sliding plates 31 together, the four sliding plates 31 slide in the two sliding grooves 32 respectively, allowing the maintenance personnel to be limited by the two limit arc-shaped plates 29 near the ladder 21 when they accidentally detach from the ladder 21, making the maintenance personnel have a great possibility to catch the ladder 21 again, thus improving the safety of the maintenance personnel, an elastic layer 30 can also be fixedly set on the inner side of the two limit arc-shaped plates 29, making the contact between the maintenance personnel and the limit arc-shaped plates 29 become flexible contact, improving the comfort of the maintenance personnel, the sliding groove 32 is a groove that is smaller at the top and larger at the bottom, the width of the sliding plate 31 is larger than the width of the top end of the sliding groove 32, preventing the sliding plate 31 from easily detaching from the sliding groove 32.

As shown in FIGS. 7 and 10, both ends of the connecting rod 28 are fixedly provided with fixed plates 33, positioning holes are provided on the fixed plates 33, telescopic holes 36 are provided on the limit arc-shaped plates 29, telescopic springs 35 are fixedly set in the telescopic holes 36, and positioning rods 34 are slidably set, the telescopic springs 35 are fixedly connected to the positioning rods 34, the positioning rods 34 are slidably connected to the positioning holes.

When the limit arc-shaped plate 29 and the connecting rod 28 need to be separated, the maintenance personnel first push the positioning rod 34 away from the positioning hole, then rotate the limit arc-shaped plate 29, making the limit arc-shaped plate 29 away from the connecting rod 28, when the limit arc-shaped plate 29 and the connecting rod 28 need to be connected, the maintenance personnel first press the positioning rod 34 completely into the telescopic hole 36, the telescopic spring 35 is compressed by the positioning rod 34, then rotate the limit arc-shaped plate 29 close to the connecting rod 28, the limit arc-shaped plate 29 will bring the positioning rod 34 close to the fixed plate 33, until the top end of the positioning rod 34 abuts the fixed plate 33, the maintenance personnel can release the positioning rod 34, and continue to rotate the limit arc-shaped plate 29, until the positioning rod 34 aligns with the positioning hole, the positioning rod 34 will be pushed into the positioning hole by the telescopic spring 35, forming the connection between the limit arc-shaped plate 29 and the connecting rod 28.

The above embodiments should not limit this invention in any way, any technical solutions obtained by equivalent substitution or equivalent transformation are within the scope of protection of this invention.

Claims

1. A pumping unit using a concentric dual-axis drive control device, comprising a base set on a wellhead, a box-type derrick fixedly set on the base, and a platform fixedly set on the top end of the box-type derrick, characterized in that: it further comprises a lower power mechanism, the lower power mechanism comprises a power motor, a reducer, a brake, an upper sprocket, a transmission chain, a lower sprocket and a balance weight; the power motor, the reducer and the brake are all fixed on the base, and are all located below the box-type derrick, the brake connects the power motor and the reducer, a drum and an upper sprocket are rotatably set on the platform, the lower sprocket is fixedly connected to the output shaft of the reducer, the transmission chain transmits and connects the upper sprocket and the lower sprocket, and is fixedly connected to the balance weight, a transmission belt is set on the drum, one end of the transmission belt connects the balance weight, and the other end connects a sucker rod.

2. The pumping unit using a concentric dual-axis drive control device according to claim 1, characterized in that: an upper hook and a lower hook are set on the balance weight, the transmission chain connects the upper hook and the lower hook.

3. The pumping unit using a concentric dual-axis drive control device according to claim 1, characterized in that: a first belt clamp is set on the sucker rod, a second belt clamp is set on the balance weight, the two ends of the transmission belt respectively connect the first belt clamp and the second belt clamp.

4. The pumping unit using a concentric dual-axis drive control device according to claim 1, characterized in that: the power motor is a reversible motor that can rotate forward and backward.

5. The pumping unit using a concentric dual-axis drive control device according to claim 1, characterized in that: a support rod is fixedly set on the base, the support rod is fixedly connected to the box-type derrick.

6. The pumping unit using a concentric dual-axis drive control device according to claim 1, characterized in that: a cylinder seat is fixedly set on the wellhead, a telescopic cylinder is fixedly set on the cylinder seat, the free end of the telescopic cylinder is fixedly connected to the base.

7. The pumping unit using a concentric dual-axis drive control device according to claim 1, characterized in that: the reducer is a dual-axis reducer, the number of the upper sprocket, the lower sprocket and the transmission chain are all two.

8. The pumping unit using a concentric dual-axis drive control device according to claim 1, characterized in that: a ladder is fixedly set on the box-type derrick, a guardrail is fixedly set on the platform, a protective cover with a bottom opening is fixedly set on the platform, the drum is located inside the protective cover.

9. The pumping unit using a concentric dual-axis drive control device according to claim 8, characterized in that: it further comprises a safety mechanism, the safety mechanism comprises a connecting rod, a sliding rod and two limit arc-shaped plates, both ends of the ladder are provided with sliding grooves, two sliding plates are slidably set in the sliding grooves, protruding rods are fixedly set on the sliding plates, the connecting rod and the sliding rod are both fixedly connected to the two protruding rods, both ends of the two limit arc-shaped plates are rotatably connected to the sliding rod, and the other end is detachably connected to the connecting rod.

10. The pumping unit using a concentric dual-axis drive control device according to claim 9, characterized in that: both ends of the connecting rod are fixedly provided with fixed plates, positioning holes are provided on the fixed plates, telescopic holes are provided on the limit arc-shaped plates, telescopic springs are fixedly set in the telescopic holes, and positioning rods are slidably set, the telescopic springs are fixedly connected to the positioning rods, the positioning rods are slidably connected to the positioning holes.