CN114229728A - Direct-drive double-power drilling winch - Google Patents

Abstract

The invention discloses a direct-drive double-power well drilling winch, which relates to the technical field of petroleum drilling and production mechanical equipment and comprises a frame, a roller shaft assembly, a motor, a disc brake and an alternating-current variable-frequency control system, wherein the single-shaft winch is input by double power of the motor and a chain, the right end of the shaft is directly connected with an alternating-current variable-frequency motor rotor through a ball cage type coupling, the left end of the shaft is provided with a chain driving device, a chain wheel and the shaft are clutched by a clutch, two sets of power independently run and are mutually standby, when the motor drives, a main brake is used for motor energy consumption braking, an auxiliary brake is used for disc braking, when the chain drives, the disc brake is a main brake, the disc brake is pneumatic type, a single-side air-cooled brake disc is configured, all control is integrated in a driller room, the invention realizes the double-power driving of the well drilling winch, adopts a direct-drive technology, the disc brake is pneumatic type, the whole size is small, the weight is light, the power loss is small, the transmission is simple, and the maintenance point is few.

Description

Direct-drive double-power drilling winch

Technical Field

The invention relates to the technical field of petroleum drilling and production mechanical equipment, in particular to a direct-drive double-power drilling winch.

Background

The power transmission system of the petroleum drilling winch determines the overall performance of a drilling machine, the technology is continuously improved, the winch is developed into an electric drive or an electromechanical composite drive from a traditional mechanical drive, only one set of drive power is provided, in the prior art, the electric drive is divided into a direct current drive and an alternating current variable frequency drive, the direct current drive is of a multi-shaft internal speed changing structure, the alternating current variable frequency drive is of a reduction gearbox drive single-shaft structure, part of the mechanical drive and the electric drive winch are provided with an independent emergency motor drive or a motor automatic bit feeding system, and under the special working condition, the equipment is required to be provided with a double-power system, and the drilling winch has the advantages of advancement, intellectualization, small size and light weight, can enter a running state in a short time when being moved, and is matched with an economic and applicable brake system.

Disclosure of Invention

In order to realize a double-power driving winch, the invention provides a direct-drive double-power drilling winch which comprises a rack, a roller shaft assembly, a motor, a disc brake and an alternating-current variable frequency control system.

Preferably, the roller shaft assembly mainly comprises a clutch, a chain wheel, a brake disc, a roller body and a shaft, wherein the roller body is arranged at the middle section of the shaft and is in key connection, the brake disc is arranged on the left side plate of the roller body, flat-mouth-shaped bearing seats are arranged on two sides of the roller body, self-aligning roller bearings are arranged in the bearing seats, a flange on the right side of the shaft is connected with a coupler, the clutch is arranged on the left side of the shaft, an outer gear ring of the clutch is arranged on the shaft, the movable disc is connected with an inner gear ring, the inner gear ring is connected with a connecting disc, the connecting disc is connected with a hub, the hub is connected with the chain wheel, and two bearings are sleeved in the hub in a hollow manner.

Preferably, the clutch is a pneumatic tyre type push plate clutch, a clutch fluted disc is in tooth-type connection with the outer gear ring and the inner gear ring, the air inlet rotary joint is installed at the left end of the shaft, the shaft center is drilled, control air enters the air bag from a shaft radial hole through a pipeline, and the clutch inner gear ring is provided with an oil thrower.

Preferably, the motor center is a through hole, the coupler is installed in the motor through hole, the right side of the motor rotor is connected with the connecting flange, the end face key is connected, the connecting flange and the coupler are connected through the radial key, and the encoder connector is connected with the coupler flange.

Preferably, the coupler is a sliding DOX type constant velocity universal joint, the two ends of the coupler are flanges, and the left side of the coupler is in key connection with the end surface of the shaft.

Preferably, the disc brake is of a pneumatic type, the brake disc is made of bronze casting through metal fine die casting, a plurality of radiating fins are uniformly distributed on the circumference of the inner layer of the friction surface, the brake caliper actuator is of a low-pressure type, the actuating device is provided with a shifting fork capable of adjusting the clearance of the friction pair, the brake caliper body is made of silicon bronze alloy containing stainless steel components through a fine die casting process, and the friction block is made of a non-asbestos composite material.

Preferably, the motor control is ac frequency conversion control, the frequency conversion unit adopts a full digital vector control ac frequency conversion speed regulation device to rectify ac power into dc power and then convert the dc power into ac power with adjustable frequency to control the motor, the VFD output frequency is controlled by an intelligent remote driller electric control console, and the system adopts a PLC and a PROFIBUS bus to perform data rapid exchange between the systems.

Preferably, the energy consumption braking unit of the winch consists of a chopper power braking unit and a braking resistor, and under the braking condition, the energy consumption braking unit automatically starts working and generates energy consumption braking power to meet the requirements of the winch on the drilling load and speed, so that the drilling speed is stable and adjustable, the drilling tool is suspended, and the energy consumption braking unit of the winch is applied to realize the soft stop of the turntable.

Preferably, the rack is welded by steel plates, the front side of the rack is opened, the rack is integrally machined, the chain wheel and the chain are lubricated by engine oil in a splashing mode, and the rest of the chain wheel and the chain are lubricated by grease.

The invention has the advantages and technical effects that:

1. the system is provided with a double-power system, and the two systems are mutually standby.

2. The direct drive system of the motor has the advantages of small power loss, low cost, simple transmission and few faults.

3. The winch has small overall size, light weight and small occupied space of a drill floor.

4. The rzeppa coupling is small in size, large in transmission torque and strong in compensation capacity, and meets the tight connection of the motor.

5. The disc brake is designed aiming at severe working conditions, and has the advantages of less maintenance points, large friction pair and long service life.

Drawings

FIG. 1 is a schematic view of a direct drive dual power drilling winch.

FIG. 2 is a schematic view of a drum shaft assembly.

Fig. 3 is a schematic view of the motor and installation.

Fig. 4 is a schematic view of a coupling.

Fig. 5 is a schematic view of a motor attachment flange.

FIG. 6 is a schematic view of the installation of the disc brake.

FIG. 7 is a schematic view of a brake caliper.

In the figure, 1, a roller shaft assembly, 2, a frame, 3, a motor, 4, a disc brake, 5, a clutch, 6, a chain wheel, 7, a brake disc, 8, a roller body and 9, shafts are arranged. 10. Coupling, 11, connecting flange, 12, key, 13, encoder joint, 14, brake caliper.

Detailed Description

Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 7, the drilling winch of the embodiment comprises a roller shaft assembly 1, a frame 2, a motor 3, a disc brake 4 and a variable frequency control system, the single-shaft winch is provided with double power inputs, a coupler 10 is arranged at the right end of a shaft 9, the coupler 10 is directly connected with a rotor of an alternating current variable frequency motor 3, a base of the motor 3 is arranged on a base, a chain driving device is arranged at the left end of the shaft 9, a chain wheel 6 is engaged with the shaft 9 through a clutch 5, two sets of power independently run and are mutually standby, when the motor 3 drives, a main brake is used for motor energy consumption braking, an auxiliary brake is used for disc brake 4, and when the chain drives, the main brake is used for disc brake 4, and all controls are integrated in a driller room.

In the embodiment, a roller shaft assembly 1 mainly comprises a clutch 5, a chain wheel 6, a brake disc 7, a roller body 8 and a shaft 9, wherein the roller body 8 is installed at the middle section of the shaft 9 and is in key connection, the single-sided brake disc 7 is installed on the left side plate of the roller body 8 and is positioned in a locking manner, flat-mouth-shaped bearing seats are installed on two sides of the roller body 8, self-aligning roller bearings are installed in the bearing seats, the bearing seats are rotatably installed in a rack 2, the right side of the shaft 9 is connected with a flange coupling 10, the left side of the shaft 9 is provided with the clutch 5, an outer gear ring of the clutch is installed on the shaft 9, the movable disc is connected with an inner gear ring, the inner gear ring is connected with a connecting disc, the connecting disc is connected with a hub, the hub is connected with the chain wheel 6, and two bearings are sleeved in the hub in a hollow manner.

In this embodiment, the clutch 5 is a pneumatic tyre type push plate clutch, the clutch fluted disc is in tooth connection with the outer gear ring and the inner gear ring, the air inlet rotary joint is installed at the left end of the shaft 9, the shaft center is drilled, control air enters the air bag through a pipeline from a shaft radial hole, and the clutch inner gear ring is provided with an oil thrower.

In this embodiment, the center of motor 3 is the through-hole, and shaft coupling 10 is installed in the motor through-hole, and electric motor rotor right side hookup flange 11, bolt and terminal surface key-type connection, flange 11 and shaft coupling 10 adopt radial key 12 to be connected, and the encoder connects 13 and shaft coupling 10 flange joint, and encoder connects installation logging and well drilling encoder.

In this embodiment, the coupling 10 is a non-standard sliding type DOX type constant velocity universal joint, the two ends are flanges, and the left side is connected with the end face key of the shaft 9.

In the embodiment, the disc brake 4 is of a pneumatic type, control gas comes from a drilling machine gas source, the brake disc 7 is integrally cast by bronze cast by a metal precision die, a plurality of radiating fins are uniformly distributed on the circumference of an inner layer of a friction surface, the brake caliper 14 is a lever mechanism, the actuator is of a low-pressure type, the actuator is provided with a shifting fork capable of adjusting the gap between the brake disc and a brake block, the spring type safety caliper is provided with a compensation connecting device, the brake caliper body is made of silicon bronze alloy containing stainless steel components through a precision die casting process, the brake caliper body is suitable for a hydraulic component or a spring component group, and the friction block is made of a non-asbestos component composite material.

The winch motor control is AC frequency conversion control, the frequency conversion unit adopts a full digital vector control AC frequency conversion speed regulation device, AC is rectified into DC and then converted into AC with adjustable frequency to control the motor 3, VFD output frequency is controlled by an intelligent remote driller electric control console, the system adopts PLC and PROFIBUS buses to carry out data rapid exchange between systems, and an industrial personal computer (containing HML) is used for monitoring and fault alarming, parameter modification, diagnosis, storage, message and configuration pictures of all frequency conversion running states, MCC running states and the like of the system, and the system has the functions of frequency converter fault alarming indication and controlling disc brake 4 emergency brake, anti-collision safety parking speed, AC input voltage no-voltage protection, overcurrent short-circuit protection, motor 3 wind loss protection and locking protection.

The dynamic braking unit consists of a chopper power braking unit and a braking resistor, and under the braking condition, the dynamic braking unit automatically works and generates dynamic braking power to meet the requirements of drilling load and speed required by the winch, realize stable and adjustable drilling speed and hovering of a drilling tool, and simultaneously realize soft stop of the turntable by applying the dynamic braking unit of the winch.

In this embodiment, frame 2 is by the steel sheet welding, and the front side opening is installed bearing seat hole welding thick flange, and all welds whole processing after finishing, rotating part installation guard shield, frame top installation double track way rope winding jib and shelves rope sheave.

In the embodiment, the chain wheel and the chain are used for splash lubrication of engine oil, the oil tank is provided with the vernier, the air filter and the oil injection window, the rest of the oil tank is lubricated by grease, the bearing is intensively lubricated, the oil cup is centralized on one side of the rack 2, and the copper pipe is arranged between the oil cup and a lubricating point.

In this embodiment, the sprocket 6 power is driven by the rig main machine power system through a chain.

1. When the motor 3 works, the clutch 6 is disconnected, and the motor driving system is used as a main driving system of the winch.

2. When the chain wheel 6 works, the motor 3 is powered off, and the chain driving system is used as an auxiliary driving system.

3. The two sets of power systems operate independently and are mutually standby, and the two sets of systems can be switched.

4. After the well site is moved, the chain driving system is started before the electric control system is not connected or the debugging is finished.

This example is illustrated as follows:

the two sets of transmission systems are designed to be safely interlocked.

The brake disc shield has good ventilation capacity.

The winch is small in overall size and is more suitable for a wheel type drilling machine.

Claims (7)

1. The utility model provides a directly drive double dynamical drilling winch which characterized in that: the winch comprises a rack, a roller shaft assembly, a motor, a disc brake and an alternating current variable frequency control system, wherein the motor and a chain are in double power input, the right end of the shaft is connected with a coupler, the coupler is directly connected with an alternating current variable frequency motor rotor, the left end of the shaft is provided with a chain driving device, a chain wheel and the shaft are connected by a clutch, two sets of power independently run and are mutually standby, during motor driving, a main brake is motor energy-consumption braking, the disc brake is used as an auxiliary brake, during chain driving, the disc brake is a main brake, and all control is integrated in a driller room.

2. The direct-drive dual-power drilling winch according to claim 1, characterized in that: the winch is characterized in that a roller body is installed in the middle section of a winch shaft and is in key connection with the roller body, a brake disc is installed on the left side plate of the roller body, flat-mouth-shaped bearing seats are installed on two sides of the roller body, a shaft right end is in flange connection with a coupler, a clutch is installed at the left end of the shaft, an outer gear ring of the clutch is installed on the shaft, the movable disc is connected with an inner gear ring, the inner gear ring is connected with a connecting disc, the connecting disc is connected with a hub, the hub is connected with a chain wheel, and two hollow bearings are installed in the hub.

3. The direct-drive dual-power drilling winch according to claim 1, characterized in that: the clutch is a pneumatic tyre type push plate clutch, a clutch fluted disc is in tooth connection with the outer gear ring and the inner gear ring, the air inlet rotary joint is installed at the left end of the shaft, the shaft center is drilled, control air enters the air bag from a radial hole of the shaft through a pipeline, and the clutch inner gear ring is provided with an oil thrower.

4. The direct-drive dual-power drilling winch according to claim 1, characterized in that: the motor center is the through-hole, and the shaft coupling is installed in the motor through-hole, and the motor rotor right side hookup flange, end face key-type connection, flange and shaft coupling adoption radial key-type connection, encoder joint and shaft coupling flange joint.

5. The direct-drive dual-power drilling winch according to claim 1, characterized in that: the coupler is a sliding DOX type constant velocity universal coupler with a ball cage, flanges are arranged at two ends of the coupler, and the left end of the coupler is in key connection with the end surface of a shaft.

6. The direct-drive dual-power drilling winch according to claim 1, characterized in that: the disc brake is of a pneumatic type, the brake disc is cast by bronze die-casting of a metal finish die, a plurality of radiating fins are uniformly distributed on the circumference of the inner layer of a friction surface, the brake caliper actuator is of a low-pressure type, the actuating device is provided with a shifting fork capable of adjusting the clearance of a friction pair, and the brake caliper body is made of silicon bronze alloy containing stainless steel components through a finish die-casting process.

7. The direct-drive dual-power drilling winch according to claim 1, characterized in that: the control system frequency conversion unit adopts a full-digital vector control alternating current frequency conversion speed regulation device to rectify alternating current into direct current and then convert the direct current into alternating current with adjustable frequency to control the motor, the VFD output frequency is controlled by an intelligent remote driller electric control operation platform, the system adopts a PLC and a PROFIBUS bus to carry out data rapid exchange between systems, the energy consumption braking unit consists of a chopper power braking unit and a braking resistor, and under the braking condition, the system automatically puts into work and generates energy consumption braking power to meet the requirements of drilling load and speed required by a winch, and stable and adjustable drilling speed and drilling tool hovering are realized.

Images