A left and right speed reduction box independent air shift system of a super deep well AC variable frequency drilling machine

Abstract

The utility model discloses a winch left and right reduction gearbox independent air shift system of superdeep well alternating current variable frequency drilling machine belongs to petroleum drilling machine technical field, the utility model mainly lies in with PLC through the logic operation control two groups of normal break solenoid valve to realize independent control winch left and right reduction gearbox shift cylinder and lock gear cylinder, and further realizes the independent shift of winch left and right reduction gearbox. The traditional superdeep well alternating current variable frequency drilling machine winch left and right reduction gearbox shift only uses a group of normal break solenoid valve control, in the early stage of drilling, the load of tripping is small, when using one reduction gearbox, the other reduction gearbox cannot be disconnected, can only be dragged to run passively, and the non - working reduction gearbox is also increased the abrasion of non - working reduction gearbox, and its corresponding lubricating oil pump also works normally, and the status of wasting energy. Realize the working mode of dynamic adjustment of double reduction gearbox according to the drilling condition, take into account the demand of " one spare one use " of shallow well layer and " double box cooperation " of deep well layer, ensure that the operation is simple, efficient, safe and energy - saving, and environmental protection.

Description

Technical Field

[0001] This utility model belongs to the field of oil drilling rig technology, and in particular relates to an independent air shifting system for the left and right gearboxes of an ultra-deep well AC variable frequency drilling rig. Background Technology

[0002] The development of oil drilling rigs has always been a focus of the oil industry. With continuous oil extraction and the gradual depletion of shallow resources, the trend is now towards ultra-deep well drilling rigs. Simultaneously, the hoisting capacity of the winch plays an irreplaceable and decisive role in this development. Currently, most deep and ultra-deep well AC variable frequency drilling rig winches in the industry are dual-drive winches with left and right gearboxes. However, the air shift control of the winch is basically controlled by a set of solenoid valves to control the simultaneous shifting of the left and right gearboxes. The drawback of this control is that in the early stages of drilling, when the tripping load is relatively small, when one gearbox is driving the winch, the other gearbox cannot disengage and can only be passively dragged along, increasing the wear of the non-working gearbox. At the same time, the corresponding lubrication pump also needs to work normally, wasting energy. This is insufficient to meet the demands of modern oil machinery for high efficiency, energy saving, reliability, and environmental protection. Therefore, developing an independent air shifting system for the left and right gearboxes of the winch in ultra-deep well AC variable frequency drilling rigs is particularly important. Utility Model Content

[0003] The purpose of this invention is to provide an independent air-shifting system for the left and right gearboxes of the winch in an ultra-deep well AC variable frequency drilling rig. This invention solves the problem in the current oil drilling industry where, during the early stages of drilling with ultra-deep well AC variable frequency drilling rigs, the tripping load is relatively low. When only one gearbox is used to drive the winch, the other gearbox cannot be disengaged and can only be passively dragged along. This results in passive wear of the non-working gearbox, while the corresponding lubrication pump also needs to operate normally, wasting energy. The invention meets the requirement that one gearbox be used while the other is on standby during low-load operation of the winch in the early stages of drilling, and that both gearboxes work simultaneously during high-load operation of the winch in deep wells. The winch gearbox operates "when needed, and stops when on standby," replacing the traditional "operates only when not needed," ensuring simple operation, high efficiency, energy saving, safety, and environmental protection.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an independent pneumatic shifting system for the left and right gearboxes of an ultra-deep well AC variable frequency drilling rig, the system comprising a three-position gear selection switch, a three-position shift locking switch, and a three-position left and right gearbox selection switch, wherein the three-position gear selection switch, the three-position shift locking switch, and the three-position left and right gearbox selection switch are connected to the input terminal of a PLC via cables.

[0005] Furthermore, the output terminal of the PLC is connected to the normally closed solenoid valve group via a cable.

[0006] Furthermore, each solenoid valve in the normally closed solenoid valve group is connected to the air source collection pipe of the valve island box and the shifting and locking cylinders of the left and right gearboxes of the winch via air pipelines.

[0007] The beneficial effects of this utility model are as follows: Addressing the drawbacks of current ultra-deep well drilling rigs where, during the early stages of drilling, the tripping load is relatively small, and when only one gearbox drives the winch, the other gearbox cannot disengage and is passively dragged along, increasing wear on the non-working gearbox and requiring the corresponding lubrication pump to operate normally, thus wasting energy, this utility model achieves independent control of the left and right gearboxes of the winch. It enables dynamic adjustment of the dual gearbox operating mode according to drilling conditions, balancing the needs of "one backup, one in use" in shallow wells and "dual gearbox coordination" in deep wells. This meets the demands of modern petroleum machinery for high efficiency, energy saving, reliability, and environmental protection. Attached Figure Description

[0008] Figure 1 This utility model provides a simplified schematic diagram of the independent air shifting system for the left and right gearboxes of an ultra-deep well AC variable frequency drilling rig.

[0009] Figure 2 This utility model provides a winch transmission principle diagram of an independent air shifting system for the left and right gearboxes of an ultra-deep well AC variable frequency drilling rig.

[0010] In the diagram: 1. PLC; 2. Three-position gear selector switch; 3. Three-position shift lock switch; 4. Three-position left / right gearbox selector switch; 5. Valve island box; 6. Air source manifold of valve island box; 7. First normally closed solenoid valve group; 7-1. First gear control solenoid valve for the left gearbox of the winch; 7-2. Neutral gear control solenoid valve for the left gearbox of the winch; 7-3. Second gear control solenoid valve for the left gearbox of the winch; 7-4. Shift control solenoid valve for the left gearbox of the winch; 7-5. Lock control solenoid valve for the left gearbox of the winch; 8. Second normally closed solenoid valve group; 8-1. First gear control solenoid valve for the right gearbox of the winch; 8-2. Neutral gear control solenoid valve for the right gearbox of the winch; 8-3. Second gear control solenoid valve for the right gearbox of the winch; 8-4. Shift control solenoid valve for the right gearbox of the winch; 8-5. Lock control solenoid valve for the right gearbox of the winch. 9. Shift cylinder for the left gearbox of the winch; 10. Locking cylinder for the left gearbox of the winch; 11. Shift cylinder for the right gearbox of the winch; 12. Locking cylinder for the right gearbox of the winch; 13. Left gearbox of the winch; 14. Right gearbox of the winch; Detailed Implementation

[0011] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0012] Please also refer to Figure 1, Figure 2 The following will describe in detail, with reference to the accompanying drawings, an independent air shifting system for the winch left and right gearboxes of an ultra-deep well AC variable frequency drilling rig according to an embodiment of the present invention.

[0013] like Figure 1 As shown, an independent air shifting system for the left and right gearboxes of an ultra-deep well AC variable frequency drilling rig includes a three-position gear selection switch (2), a three-position shift locking switch (3), and a three-position left and right gearbox selection switch (4). When controlling the gear position of the left and right gearboxes of the winch, first operate the three-position left and right gearbox selection switch (4) to select one of the three gearboxes: left gearbox, left and right gearbox, or right gearbox. Then operate the three-position gear selection switch (2) to select one of the three gear positions: 1st gear, neutral, or 2nd gear. While operating the three-position gear selection switch (2), the PLC (1) performs logic operations to connect the gear locking switch (3) to the shifting side. After the shift is completed, the gear locking switch (3) is connected to the locking side to lock the current gear position.

[0014] Specifically, when selecting the left gearbox in gear 1: PLC (1) performs logic operations to energize the solenoid valve 7-1 controlling the left gearbox in gear 1; de-energize the solenoid valve 7-2 controlling the left gearbox in neutral; de-energize the solenoid valve 7-3 controlling the left gearbox in gear 2; de-energize the solenoid valve 8-1 controlling the right gearbox in gear 1; de-energize the solenoid valve 8-2 controlling the right gearbox in neutral; and de-energize the solenoid valve 8-3 controlling the right gearbox in gear 2. The left gearbox shift cylinder 9 of the winch is activated, the left gearbox in gear 1 is successfully shifted, the left gearbox 13 of the winch operates in gear 1, and the right gearbox 14 of the winch stops.

[0015] Specifically, when the left gearbox is in neutral: PLC(1) performs logic operations, causing the solenoid valve 7-1 controlling the left gearbox 1st gear to be de-energized; the solenoid valve 7-2 controlling the left gearbox neutral gear to be energized; the solenoid valve 7-3 controlling the left gearbox 2nd gear to be de-energized; the solenoid valve 8-1 controlling the right gearbox 1st gear to be de-energized; the solenoid valve 8-2 controlling the right gearbox neutral gear to be de-energized; and the solenoid valve 8-3 controlling the right gearbox 2nd gear to be de-energized. The left gearbox shift cylinder 9 of the winch is activated, the left gearbox is successfully shifted to neutral, the left gearbox 13 is engaged in neutral, and the right gearbox 14 stops.

[0016] Specifically, when selecting the second gear of the left gearbox: PLC (1) performs logic operations, causing the solenoid valve 7-1 controlling the first gear of the winch's left gearbox to be de-energized; the solenoid valve 7-2 controlling the neutral gear of the winch's left gearbox to be de-energized; the solenoid valve 7-3 controlling the second gear of the winch's left gearbox to be energized; the solenoid valve 8-1 controlling the first gear of the winch's right gearbox to be de-energized; the solenoid valve 8-2 controlling the neutral gear of the winch's right gearbox to be de-energized; and the solenoid valve 8-3 controlling the second gear of the winch's right gearbox to be de-energized. The shift cylinder 9 of the winch's left gearbox is activated, the second gear of the left gearbox is successfully shifted, the left gearbox 13 of the winch operates in the second gear, and the right gearbox 14 of the winch stops.

[0017] Specifically, when the right gearbox is selected to gear 1: PLC (1) performs logic operations to de-energize the solenoid valve 7-1 controlling gear 1 of the winch's left gearbox; de-energize the solenoid valve 7-2 controlling gear 2 of the winch's left gearbox; de-energize the solenoid valve 7-3 controlling gear 2 of the winch's left gearbox; energize the solenoid valve 8-1 controlling gear 1 of the winch's right gearbox; de-energize the solenoid valve 8-2 controlling gear 2 of the winch's right gearbox; de-energize the solenoid valve 8-3 controlling gear 2 of the winch's right gearbox. The right gearbox shift cylinder 11 of the winch is activated, the right gearbox successfully shifts to gear 1, the left gearbox 13 of the winch stops, and the right gearbox 14 of the winch operates in gear 1.

[0018] Specifically, when the right gearbox is in neutral: PLC(1) performs logic operations, causing the solenoid valve 7-1 controlling the left gearbox 1st gear to be de-energized; the solenoid valve 7-2 controlling the left gearbox neutral gear to be de-energized; the solenoid valve 7-3 controlling the left gearbox 2nd gear to be de-energized; the solenoid valve 8-1 controlling the right gearbox 1st gear to be de-energized; the solenoid valve 8-2 controlling the right gearbox neutral gear to be energized; and the solenoid valve 8-3 controlling the right gearbox 2nd gear to be de-energized. The right gearbox shift cylinder 11 of the winch is activated, the right gearbox is successfully shifted to neutral, the left gearbox 13 of the winch stops, and the right gearbox 14 of the winch is put into neutral.

[0019] Specifically, when the right gearbox is selected to be in gear 2: PLC (1) performs logic operations to de-energize the solenoid valve 7-1 controlling gear 1 of the winch's left gearbox; de-energize the solenoid valve 7-2 controlling gear 2 of the winch's left gearbox; de-energize the solenoid valve 7-3 controlling gear 2 of the winch's left gearbox; de-energize the solenoid valve 8-1 controlling gear 1 of the winch's right gearbox; de-energize the solenoid valve 8-2 controlling gear 2 of the winch's right gearbox; and energize the solenoid valve 8-3 controlling gear 2 of the winch's right gearbox. The right gearbox shift cylinder 11 of the winch is activated, the right gearbox successfully shifts to gear 2, the left gearbox 13 of the winch stops, and the right gearbox 14 of the winch operates in gear 2.

[0020] Specifically, when selecting gear 1 of the left and right gearboxes: PLC (1) performs logic operations to energize the solenoid valve 7-1 controlling gear 1 of the winch's left gearbox; de-energize the solenoid valve 7-2 controlling gear 2 of the winch's left gearbox; de-energize the solenoid valve 7-3 controlling gear 2 of the winch's left gearbox; energize the solenoid valve 8-1 controlling gear 1 of the winch's right gearbox; de-energize the solenoid valve 8-2 controlling gear 2 of the winch's right gearbox; de-energize the solenoid valve 8-3 controlling gear 2 of the winch's right gearbox. The shift cylinder 9 of the left gearbox and the shift cylinder 11 of the right gearbox operate simultaneously, and the gear shift of the left and right gearboxes is successful, with both gearboxes working simultaneously in gear 1.

[0021] Specifically, when selecting the neutral position of the left and right gearboxes: PLC (1) performs logic operations to energize the solenoid valve 7-1 controlling the first gear of the winch's left gearbox; de-energize the solenoid valve 7-2 controlling the neutral position of the winch's left gearbox; de-energize the solenoid valve 7-3 controlling the second gear of the winch's left gearbox; energize the solenoid valve 8-1 controlling the first gear of the winch's right gearbox; de-energize the solenoid valve 8-2 controlling the neutral position of the winch's right gearbox; de-energize the solenoid valve 8-3 controlling the second gear of the winch's right gearbox. The shift cylinder 9 of the left gearbox and the shift cylinder 11 of the right gearbox operate simultaneously, and both gearboxes are simultaneously engaged in neutral.

[0022] Specifically, when selecting gear 2 for the left and right gearboxes: PLC (1) performs logic operations to de-energize the solenoid valve 7-1 controlling gear 1 of the winch's left gearbox; de-energize the solenoid valve 7-2 controlling gear neutral of the winch's left gearbox; energize the solenoid valve 7-3 controlling gear 2 of the winch's left gearbox; de-energize the solenoid valve 8-1 controlling gear 1 of the winch's right gearbox; de-energize the solenoid valve 8-2 controlling gear neutral of the winch's right gearbox; energize the solenoid valve 8-3 controlling gear 2 of the winch's right gearbox. The shift cylinder 9 of the left gearbox and the shift cylinder 11 of the right gearbox operate simultaneously, and the gear shift of the left and right gearboxes is successful, with both gearboxes operating in gear 2 at the same time.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An independent air shifting system for the left and right gearboxes of an ultra-deep well AC variable frequency drilling rig, comprising a PLC (1), a three-position gear selection switch (2), a three-position shift locking switch (3), a three-position left and right gearbox selection switch (4), a valve island box (5), a valve island box air source collection pipe (6), a first normally closed solenoid valve group (7), and a second normally closed solenoid valve group (8), characterized in that: The three-position gear selector switch (2), the three-position shift lock switch (3), and the three-position left and right gearbox selector switch (4) are respectively connected to the input terminal of PLC (1) via cables. The output terminal of PLC (1) is connected to the first normally closed solenoid valve group (7) and the second normally closed solenoid valve group (8) via cables. The first normally closed solenoid valve group (7) and the second normally closed solenoid valve group (8) are located in the valve island box (5). The air source collection pipe (6) of the valve island box is connected to the first normally closed solenoid valve group (7) and the second normally closed solenoid valve group (8) via air lines. The first normally closed solenoid valve group (7) is connected to the left gearbox shift cylinder (9) and the left gearbox lock cylinder (10) of the winch via air lines. The second normally closed solenoid valve group (8) is connected to the right gearbox shift cylinder (11) and the right gearbox lock cylinder (12) of the winch via air lines.

2. The independent air shifting system for the left and right gearboxes of the winch of an ultra-deep well AC variable frequency drilling rig according to claim 1, characterized in that... Two sets of normally closed solenoid valve groups (7) and normally closed solenoid valve groups (8) are set in the valve island box (5) to independently control the shifting of the winch. The first normally closed solenoid valve group (7) controls the shifting of the left gearbox of the winch, and the second normally closed solenoid valve group (8) controls the shifting of the right gearbox of the winch.

3. The independent air shifting system for the left and right gearboxes of the winch of an ultra-deep well AC variable frequency drilling rig according to claim 1, characterized in that... A valve island box air source collection pipe (6) is installed in the valve island box (5). The valve island box air source collection pipe (6) is connected to the winch left gearbox shift cylinder (9) and winch left gearbox locking cylinder (10) and winch right gearbox shift cylinder (11) and winch right gearbox locking cylinder (12) through the air pipeline.

4. The independent air shifting system for the left and right gearboxes of the winch of an ultra-deep well AC variable frequency drilling rig according to claim 1, characterized in that... The PLC (1) is connected to the three-position gear selector switch (2), the three-position shift lock switch (3), the three-position left and right gearbox selector switch (4), the first normally closed solenoid valve group (7), and the second normally closed solenoid valve group (8) via cables.

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