Tower type pumping unit flexible belt deviation magnetic attraction detection device

Abstract

The device comprises a detection head, a detection head support, a top supporting wheel, a side supporting wheel, a top bearing seat, a side bearing seat, a pumping unit support, a flexible belt and a tower type pumping unit. The device detects whether the flexible belt runs outside the normal swing range through the detection heads arranged on both sides of the lower part of the flexible belt of the tower type pumping unit, so as to determine whether the top supporting wheel of the pumping unit is damaged, to achieve the purpose of instant detection of the damage of the top supporting wheel of the pumping unit, to avoid the damage of other components of the pumping unit caused by the damage of the top supporting wheel and to avoid safety accidents, and to avoid the non-fault shutdown of the pumping unit caused by electromagnetic interference, thereby providing a guarantee for the safe and reliable operation of the pumping unit.

Description

Technical Field

[0001] This invention relates to oil pumping units for oilfield oil extraction, and in particular to a magnetic attraction detection device for the flexible belt deviation of a tower-type oil pumping unit. Background Technology

[0002] Most tower-type pumping units use gravity balancing, which requires a flexible belt to connect the counterweight and the sucker rod. This requires the flexible belt to bypass the support wheel located at the top of the pumping unit to achieve the opposite movement of the sucker rod and the counterweight.

[0003] In the later stages of a pumping unit's lifespan, the top support rollers are prone to damage due to prolonged exposure to alternating loads. Therefore, a detection device is needed to monitor these rollers and prevent damage to other parts of the pumping unit and potential safety hazards. Traditional tower-type pumping units often use inductive proximity switches to detect the approach of the steel-core flexible belt. However, these active switches are susceptible to electromagnetic interference, leading to erroneous signals and unexplained shutdowns. This invention proposes a magnetic attraction detection device for tower-type pumping units to address the issue of damage to the top support rollers and subsequent safety hazards. This invention utilizes a passive mechanical switch, thus avoiding unexplained shutdowns caused by electromagnetic interference. Summary of the Invention

[0004] The technical problem to be solved by this invention is to propose a magnetic attraction detection device for the deviation of the flexible belt of a tower-type pumping unit.

[0005] This invention is achieved through the following technical solution: A magnetic attraction detection device for the deviation of a flexible belt in a tower-type pumping unit includes a detection head, a detection head bracket, a top support wheel, a side support wheel, a top bearing seat, a side bearing seat, a pumping unit bracket, a flexible belt, and a tower-type pumping unit. The detection head bracket is connected to the pumping unit bracket. The top bearing seat is located at the top of the pumping unit bracket, and the side bearing seat is located on the side of the pumping unit bracket near the top. The top support wheel rotates around the top bearing seat, and the side support wheel rotates around the side bearing seat. The detection head bracket is located between the top support wheel and the side support wheel. The detection head support includes a slide groove, an upper support tube, a lower support tube, and a support tube set screw; the slide groove is connected to the upper support tube; the detection head includes a magnetic block, a switch pressure block, a switch, a connecting body, and a protective cover.

[0006] The flexible belt passes around the top support wheel and the side support wheel and contacts the top support wheel and the side support wheel. The flexible belt reciprocates along the top support wheel and the side support wheel in clockwise and counterclockwise directions.

[0007] The flexible belt reciprocates clockwise and counterclockwise along the top support wheel and the side support wheel, while swinging axially along the top support wheel and the side support wheel.

[0008] The connector is connected to the slide and its position can be adjusted horizontally along the slide. The height of the connector can be adjusted based on the vertical direction of the slide.

[0009] The support tube set screw can move relative to the lower support tube. When the support tube set screw leaves the upper support tube, the upper support tube can move up and down along the lower support tube. When the support tube set screw contacts the upper support tube, the upper support tube and the lower support tube are fixed together.

[0010] The detection heads are located on both sides of the lower part of the flexible strip and close to the flexible strip, with at least one detection head on each side of each flexible strip.

[0011] The magnetic block, switch pressure block, and switch are located inside the protective cover; the protective cover is connected to the connecting body, the switch is located on the upper part of the connecting body, the magnetic block is attracted to the upper part of the left and right sides of the switch pressure block, and the magnetic block and switch pressure block can move up and down between the protective cover and the switch.

[0012] The magnetic block is made of permanent magnet material, the switch pressure block is made of magnetically conductive material, and the protective cover is made of non-magnetically conductive material; the flexible strip contains magnetically conductive material.

[0013] The number of magnetic blocks on the left and right sides of the switch block is equal, and there is at least one magnetic block on each side; the magnetic field direction of the magnetic block is vertical, and the magnetic field direction of the magnetic block on the left and right sides of the switch block is opposite.

[0014] When the distance between the flexible strip and the detection head is greater than 5 to 30 mm, the magnetic block and the switch pressure block move downwards to contact the switch; when the distance between the flexible strip and the detection head is less than 5 to 30 mm, the flexible strip attracts the magnetic block and the switch pressure block to move upwards away from the switch.

[0015] When the magnetic block and switch pressure block move down to contact the switch, the tower pumping unit operates normally; when the flexible belt attracts the magnetic block and switch pressure block to move up and away from the switch, the tower pumping unit stops operating.

[0016] Working principle of the invention: The tower-type pumping unit's flexible belt misalignment magnetic attraction detection device has its detection head located close to and on both sides of the lower part of the flexible belt, with the detection range of the detection head outside the swing range of the flexible belt during reciprocating operation. When the top support wheel or side support wheel is damaged, the swing range of the flexible belt during reciprocating operation will expand. At this time, the swing range of the flexible belt will fall within the detection range of the detection head, thereby causing the switch of the detection head to change from the closed state to the open state, which will further stop the tower-type pumping unit from operation, thus avoiding damage to other components of the pumping unit and safety accidents.

[0017] The beneficial effects of this invention are: This device uses detection heads arranged on both sides of the lower part of the flexible belt of the tower-type pumping unit to detect whether the flexible belt is running outside the normal swing range, thereby determining whether the top support wheel of the pumping unit is damaged. It achieves the purpose of timely detection of damage to the top support wheel of the pumping unit, avoiding damage to other components of the pumping unit due to damage to the top support wheel, and avoiding safety accidents. It also avoids non-faulty shutdown of the pumping unit due to electromagnetic interference, thus providing a guarantee for the safe and reliable operation of the pumping unit. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a magnetic attraction detection device for the flexible belt misalignment of a tower-type oil pumping unit.

[0019] Figure 2 This is a schematic diagram of the detection head and its support.

[0020] Figure 3 This is a schematic diagram of the detection head. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0022] like Figure 1 , Figure 2 , Figure 3 The tower-type pumping unit flexible belt deviation magnetic attraction detection device shown includes a detection head (01), a detection head bracket (02), a top support wheel (03), a side support wheel (04), a top bearing seat (05), a side bearing seat (06), a pumping unit bracket (07), a flexible belt (08), and a tower-type pumping unit (09); the detection head bracket (02) is connected to the pumping unit bracket (07), the top bearing seat (05) is located at the top of the pumping unit bracket (07), the side bearing seat (06) is located on the side of the pumping unit bracket (07) near the top, the top support wheel (03) rotates around the top bearing seat (05), the side support wheel (04) rotates around the side bearing seat (06), and the detection head bracket (02) is located between the top support wheel (03) and the side support wheel (04); The detection head support (02) includes a slide groove (201), an upper support tube (202), a lower support tube (203), and a support tube set screw (204). The slide groove (201) is connected to the upper support tube (202). The detection head (01) includes a magnetic block (101), a switch pressure block (102), a switch (103), a connector (104), and a protective cover (105).

[0023] The flexible belt (08) passes around the top support wheel (03) and the side support wheel (04) and contacts the top support wheel (03) and the side support wheel (04). The flexible belt (08) moves back and forth in the clockwise and counterclockwise directions along the top support wheel (03) and the side support wheel (04).

[0024] The flexible belt (08) reciprocates clockwise and counterclockwise along the top support wheel (03) and the side support wheel (04) while swinging axially along the top support wheel (03) and the side support wheel (04).

[0025] The connector (104) is connected to the slide (201) and its position can be adjusted horizontally along the slide (201). The height of the connector (104) can be adjusted vertically based on the slide (201).

[0026] The support tube set screw (204) can move relative to the lower support tube (203). When the support tube set screw (204) leaves the upper support tube (202), the upper support tube (202) can move up and down along the lower support tube (203). When the support tube set screw (204) contacts the upper support tube (202), the upper support tube (202) and the lower support tube (203) are fixed together.

[0027] The detection head (01) is located on both sides of the lower part of the flexible strip (08) and close to the flexible strip (08), and there is at least one detection head (01) on each side of each flexible strip (08).

[0028] The magnetic block (101), the switch pressure block (102), and the switch (103) are located inside the protective cover (105); the protective cover (105) is connected to the connecting body (104), the switch (103) is located on the upper part of the connecting body (104), the magnetic block (101) is attracted to the upper part of the left and right sides of the switch pressure block (102), and the magnetic block (101) and the switch pressure block (102) can move up and down between the protective cover (105) and the switch (103).

[0029] The magnetic block (101) is a permanent magnet material, the switch pressure block (102) is a magnetically conductive material, the protective cover (105) is a non-magnetically conductive material, and the flexible strip (08) contains a magnetically conductive material.

[0030] The number of magnetic blocks (101) on the left and right sides of the switch block (102) is equal, and there is at least one magnetic block (101) on each side; the magnetic field direction of the magnetic block (101) is vertical, and the magnetic field direction of the magnetic block (101) on the left and right sides of the switch block (102) is opposite.

[0031] When the distance between the flexible strip (08) and the detection head (01) is greater than 5 to 30 mm, the magnetic block (101) and the switch pressure block (102) move down to contact the switch (103); when the distance between the flexible strip (08) and the detection head (01) is less than 5 to 30 mm, the flexible strip (08) attracts the magnetic block (101) and the switch pressure block (102) to move up away from the switch (103).

[0032] When the magnetic block (101) and the switch pressure block (102) move down and contact the switch (103), the tower pumping unit (09) operates normally. When the flexible belt (08) attracts the magnetic block (101) and the switch pressure block (102) to move up and away from the switch (103), the tower pumping unit (09) stops operating.

[0033] In a preferred embodiment of the present invention, the magnetic block (101) is made of neodymium iron boron permanent magnet material, the corresponding switch pressure block (102) is made of Q235 carbon steel material, the corresponding protective cover (105) is made of 304 stainless steel material, the flexible belt (08) is made of carbon steel wire rope core rubber belt, and the switch (103) is a passive mechanical switch.

[0034] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A magnetic attraction detection device for the deviation of a flexible belt in a tower-type pumping unit, characterized in that: The system includes a detection head, a detection head bracket, a top support wheel, side support wheels, a top bearing seat, side bearing seats, a pumping unit bracket, a flexible belt, and a tower-type pumping unit. The detection head bracket is connected to the pumping unit bracket. The top bearing seat is located at the top of the pumping unit bracket, and the side bearing seat is located on the side of the pumping unit bracket near the top. The top support wheel rotates around the top bearing seat, and the side support wheel rotates around the side bearing seat. The detection head bracket is located between the top support wheel and the side support wheel. The detection head bracket includes a sliding groove, an upper support tube, a lower support tube, and a support tube set screw. The sliding groove is connected to the upper support tube. The detection head includes a magnetic block, a switch pressure block, a switch, a connecting body, and a protective cover.

2. The magnetic attraction detection device for deviation of flexible belt in tower-type pumping unit according to claim 1, characterized in that: The flexible belt passes around the top support wheel and the side support wheel and contacts the top support wheel and the side support wheel. The flexible belt reciprocates along the top support wheel and the side support wheel in clockwise and counterclockwise directions.

3. The magnetic attraction detection device for deviation of flexible belt in tower-type pumping unit according to claim 1, characterized in that: The flexible belt reciprocates clockwise and counterclockwise along the top support wheel and the side support wheel, while swinging axially along the top support wheel and the side support wheel.

4. The magnetic attraction detection device for deviation of flexible belt in tower-type pumping unit according to claim 1, characterized in that: The connector is connected to the slide and its position can be adjusted horizontally along the slide. The height of the connector can be adjusted based on the vertical direction of the slide.

5. The magnetic attraction detection device for the flexible belt deviation of a tower-type pumping unit according to claim 1, characterized in that: The support tube set screw can move relative to the lower support tube. When the support tube set screw leaves the upper support tube, the upper support tube can move up and down along the lower support tube. When the support tube set screw contacts the upper support tube, the upper support tube and the lower support tube are fixed together.

6. The magnetic attraction detection device for deviation of flexible belt in tower-type pumping unit according to claim 1, characterized in that: The detection heads are located on both sides of the lower part of the flexible strip and close to the flexible strip, with at least one detection head on each side of each flexible strip.

7. The magnetic attraction detection device for deviation of flexible belt in tower-type pumping unit according to claim 1, characterized in that: The magnetic block, switch pressure block, and switch are located inside the protective cover; the protective cover is connected to the connecting body, the switch is located on the upper part of the connecting body, the magnetic block is attracted to the upper part of the left and right sides of the switch pressure block, and the magnetic block and switch pressure block can move up and down between the protective cover and the switch.

8. The magnetic attraction detection device for the flexible belt deviation of a tower-type pumping unit according to claim 1, characterized in that: The magnetic block is made of permanent magnet material, the switch pressure block is made of magnetically conductive material, and the protective cover is made of non-magnetically conductive material; the flexible strip contains magnetically conductive material.

9. The magnetic attraction detection device for deviation of flexible belt in tower-type pumping unit according to claim 1, characterized in that: The number of magnetic blocks on the left and right sides of the switch block is equal, and there is at least one magnetic block on each side; the magnetic field direction of the magnetic block is vertical, and the magnetic field direction of the magnetic block on the left and right sides of the switch block is opposite.

10. The magnetic attraction detection device for deviation of flexible belt in tower-type pumping unit according to claim 1, characterized in that: When the distance between the flexible strip and the detection head is greater than 5 to 30 mm, the magnetic block and the switch pressure block move downwards to contact the switch; when the distance between the flexible strip and the detection head is less than 5 to 30 mm, the flexible strip attracts the magnetic block and the switch pressure block to move upwards away from the switch.

11. The magnetic attraction detection device for deviation of flexible belt in tower-type pumping unit according to claim 1, characterized in that: When the magnetic block and switch pressure block move down to contact the switch, the tower pumping unit operates normally; when the flexible belt attracts the magnetic block and switch pressure block to move up and away from the switch, the tower pumping unit stops operating.

Images