CN108397143A - A kind of oil-well rig hydraulic lifting device - Google Patents

Abstract

The invention discloses a kind of oil-well rig hydraulic lifting devices comprising promotes host, boom hoist cable, leading block and electric control system；It promotes host to be fixed on petroleum drilling derrick comprising promote host cylinder, promote host piston rod, running block and quiet pulley blocks；The main shaft of the main shaft of running block and the quiet pulley blocks is spatially at being mutually perpendicular to；Host cylinder is promoted to connect electric control system by hydraulic line and connect with the hydraulic system in oil-well rig by electric control system；Boom hoist cable one end, which is fixed on, promotes host cylinder, and the other end passes through running block and quiet pulley blocks；Electric control system includes safety valve, proportional reversing valve, proportional amplifier and potentiometer.The service life of the boom hoist cable of the present invention is long, and drilling efficiency is high, without frequently dismounting, it can be achieved that it is long-range, mostly, multiple devices centralized control, meet the requirement operated in outdoor, it is safe to use, efficient.

Description

Hydraulic lifting equipment for oil drilling rig

technical field

The invention relates to the field of oil drilling, in particular to a hydraulic lifting device for an oil drilling rig.

Background technique

In oil field drilling operations, it is often necessary to carry out hoisting operations such as throwing drilling tools, lifting drilling tools, and transporting objects to the derrick at high altitude. The current common practice is to use lifting tools such as pneumatic/hydraulic winches for operations. 1) Due to the limitation of the size of the equipment and the rope capacity of the drum, the diameter of the wire rope is generally small (usually Below), there is a common phenomenon that the wire rope is not neat when the wire rope is wound on the drum, which will cause the wire rope to wear too fast, break the wire, pinch the rope, etc., affect the operation efficiency, and have potential safety hazards. There have been many safety accidents at the oil field site where objects were dropped from high altitude due to wire rope breakage. 2) Due to the influence of equipment volume, structure, operation mode, etc., the equipment is generally placed in the open air on the left and right sides in front of the drill floor, occupying a large space (about 4m ² ), resulting in great waste. 3) Pneumatic winches/hydraulic winches adopt manual and local control, which is difficult to realize mechanization and automation, and open-air operations are unavoidable, especially in winter, rainy days and other weather, personnel are inconvenient to operate, low in efficiency, and exist Definitely a security risk.

Contents of the invention

In view of the above problems, the present invention proposes a hydraulic lifting device for oil drilling rigs. Its structural design is reasonable, which can avoid the problem of messy ropes that occur when the drums of general lifting tools are wound, prolong the life of the lifting wire rope, and improve drilling efficiency; The derrick is integrated at a high position, without frequent disassembly, which saves space on the drilling floor; the hoisting main engine adopts the "electric control" method, which can realize remote, multi-site and centralized control of multiple equipment, meet the requirements of outdoor and indoor operations, and be safe and efficient to use.

Technical scheme of the present invention is as follows:

The above-mentioned hydraulic lifting equipment for oil drilling rigs includes a hoisting main frame, a hoisting wire rope, a guide pulley and an electric control system; match the lifting main engine piston rod installed on the lifting main engine cylinder, match the movable pulley block installed on the head end of the lifting main engine piston rod, and match the static pulley block installed on the outer wall of the lifting main engine cylinder; The main shaft of the movable pulley block and the main shaft of the static pulley block are perpendicular to each other in space; the cylinder body of the lifting main engine is connected to the electric control system through the hydraulic pipeline and connected to the hydraulic system in the oil drilling rig through the electric control system; The guide pulley is installed on the oil drilling rig above the hoisting main machine; one end of the hoisting wire rope is fixed on the cylinder of the hoisting main machine, and the other end passes through the moving pulley block and the static pulley block, and then passes through the guiding pulley in turn. The pulley and the auxiliary pulley on the crown block go down to the drill floor, and at the same time, the other end of the hoisting wire rope is also provided with a rotating hook for lifting heavy objects; the electric control system includes a safety valve, a proportional reversing valve, Proportional amplifier and potentiometer; the safety valve adopts a relief valve, its oil inlet is connected to the hydraulic system in the oil drilling rig, and the main oil return port is connected to the hydraulic oil return tank of the oil drilling rig; the proportional reversing valve adopts a three-position four Proportional valve, its oil inlet is connected to the oil inlet of the safety valve, and the main oil return port is connected to the main oil return port of the safety valve; at the same time, the working oil inlet of the proportional reversing valve is connected to the The oil inlet at the tail end of the cylinder body of the lifting main engine, and the working oil return port of the proportional reversing valve is connected to the oil return port at the head end of the cylinder body of the lifting main engine; one end of the proportional amplifier is electrically connected to the electrical connection of the proportional reversing valve. end, and the other end is electrically connected to the potentiometer.

The hydraulic lifting equipment for oil drilling rigs, wherein: the lifting main machine is integrally fixed on the oil drilling rig through a mounting bracket; the cylinder of the lifting main machine is vertically installed on the oil drilling rig through the mounting bracket.

The hydraulic lifting equipment for oil drilling rigs, wherein: one end of the lifting wire rope is fixed on the installation bracket and is provided with a buffer spring.

The hydraulic lifting equipment for oil drilling rigs, wherein: the outer wall of the cylinder body of the lifting machine is provided with a hydraulic pipe along the length, and a hydraulic pipeline support is welded at the tail end; one end of the piston rod of the lifting machine penetrates into the cylinder body of the lifting machine , and the other end protrudes from the outside of the lifting host cylinder.

The hydraulic lifting equipment for oil drilling rigs, wherein: one end of the hydraulic pipeline passes through the hydraulic pipeline bracket to be matched with the hydraulic pipe, and the other end is connected to the hydraulic control system.

The hydraulic lifting equipment for oil drilling rigs, wherein: the moving pulley block is matched and installed on the end of the lifting main machine piston rod protruding from the outside of the lifting main machine cylinder, and the static pulley block is matched and installed on the end of the lifting main machine cylinder Upper middle outer wall.

The hydraulic lifting equipment for oil drilling rigs, wherein: the number of pulleys arranged on the movable pulley block and the static pulley block is n×n, and n is an even number; If the number is 2n, when the moving pulley block moves 1 meter, the rotating hook arranged on the hoisting wire rope correspondingly rises or falls by 2n meters.

Beneficial effect:

Compared with existing drilling rig lifting tools such as pneumatic winches, the hydraulic lifting equipment for oil drilling rigs of the present invention has the following significant advantages:

(1) The present invention avoids the untidy winding of steel wire ropes commonly found in lifting tools such as pneumatic/hydraulic winches, thereby causing wire rope breakage, rope pinching, and excessive wear and tear, thereby improving operating efficiency and reducing potential safety hazards.

(2) The hoisting main engine of the present invention is installed with the left/right frame of the oil drilling rig at a high position, without repeated disassembly and assembly, which is convenient for construction, and the equipment does not occupy the area of the rig floor, which greatly improves the utilization rate of the space on the rig floor.

(3) The present invention adopts the "electric control" method, that is, the electric control system is used to control the lifting main machine, which meets the requirements of outdoor or indoor remote control, and avoids the inconvenience of operation caused by wind, rain, snow and other bad weather outdoor operations, and is safe. Hidden dangers and other situations; it can realize centralized control of multiple devices, and a single person can operate multiple devices at the same time, which is safe and efficient.

(4) The present invention can replace ordinary hoisting tools such as wind winches, so that the air consumption of the drilling rig system is reduced by 70%-80%, which can effectively reduce the number of starts of the air compressor and increase the life of the air compressor.

Description of drawings

Fig. 1 is the structural representation that the oil drilling rig of the present invention is installed on the oil derrick with hydraulic lifting equipment;

Fig. 2 is the enlarged structure diagram of the B area in Fig. 1 of the hydraulic lifting equipment for the oil drilling rig of the present invention;

Fig. 3 is the structural representation of the A direction of the hydraulic lifting equipment for the oil drilling rig of the present invention;

Fig. 4 is an enlarged view of area C in Fig. 3 of the hydraulic lifting device for oil drilling rigs of the present invention;

Fig. 5 is the front view of the hoisting main engine of the hydraulic hoisting equipment for the oil drilling rig of the present invention;

Fig. 6 is the left side view of the lifting host of the hydraulic lifting equipment for oil drilling rigs of the present invention;

Fig. 7 is a schematic diagram of the connection between the electric control system and the hoisting main engine of the hydraulic lifting equipment for oil drilling rigs according to the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 7, the hydraulic lifting equipment for oil drilling rigs of the present invention includes a lifting host 1, a mounting bracket 2, a lifting wire rope 3, a guide pulley 4, a hydraulic pipeline 5 and an electric control system 6.

The hoisting host 1 is a pair fixed on the mounting bracket 2 through a single ear plate and a pipe clamp, and each hoisting host 1 and the mounting bracket 2 are integrally fixed on the back of the oil drilling frame 7 through ear plates or U-shaped bolts. beam or left/right film holder. Each lifting host 1 includes a lifting host cylinder 11 , a lifting host piston rod 12 , a movable pulley block 13 and a static pulley block 14 . The hoist main frame cylinder 11 is vertically installed on the oil drilling rig 7 through the mounting bracket 2 , its outer wall is provided with a hydraulic pipe 111 along the length, and a hydraulic pipeline support 112 is welded at the tail end. One end of the lifting host piston rod 12 penetrates the inside of the lifting host cylinder 11 , and the other end extends out of the lifting host cylinder 11 . The number of pulleys provided on the movable pulley block 13 and the static pulley block 14 is n×n, and n is an even number; the movable pulley block 13 is matched and installed on the end of the lifting host piston rod 12 extending out of the lifting host cylinder 11, and the static pulley block 14 is matched and mounted on the middle and upper section outer wall of the hoisting main frame cylinder 11; the main shaft of the movable pulley block 13 and the static pulley block 14 are vertical to each other in space;

One end of the hoisting wire rope 3 is fixed on the mounting bracket 2 and is provided with a buffer spring 31, and the other end passes through the movable pulley block 13 and the static pulley block 14 of the hoisting main engine 1 in a "crossover" manner, and then passes through the guide pulley 4 and the crown block in turn. The auxiliary pulley on the top goes down to the drill floor 81 of the oil drilling rig 8, and the other end of the hoisting wire rope 3 is provided with a rotating hook 32 for lifting heavy objects; wherein, the movable pulley block 13 and the static pulley block 14 The root number of hoisting wire rope 3 is 2n, and then moving pulley block 13 moves 1 meter every time, and the rotating hook 32 on the corresponding hoisting wire rope 3 rises or falls 2n meters.

The guide pulley 4 is installed on the oil rig 7 above the hoisting main frame 1 for guiding the hoisting wire rope 3 .

One end of the hydraulic pipeline 5 passes through the hydraulic pipeline bracket 112 at the tail end of the lifting main body cylinder 11 and is connected to the hydraulic pipe 111, and the other end of the hydraulic pipeline 5 is connected to the electric control system 6; Control system 6 supplies oil, so that the lifting host piston rod 12 and movable pulley block 13 move up and down, thereby drive the rotating hook 32 on the hoisting wire rope 3 to lift and put heavy objects up and down.

The electric control system 6 is arranged on the drilling platform 81 of the oil drilling rig 8 and is located at the side of the hydraulic station 9, which includes a safety valve 61, a proportional reversing valve 62, a proportional amplifier 63 and a potentiometer 64; wherein, the safety valve 61 and the potentiometer 64 The proportional reversing valve 62 is installed on the hydraulic pipeline 5 connecting the main engine 1 of the hoist and the hydraulic station 9 . This safety valve 61 adopts the overflow valve, and its oil inlet is connected to the hydraulic system (i.e. the oil tank of the hydraulic station 9) in the oil drilling rig 8, and the main oil return port is connected to the hydraulic oil return tank in the oil drilling rig 8 (the oil tank of the hydraulic station 9). hydraulic return tank). The proportional reversing valve 62 adopts a three-position four-way proportional valve, the oil inlet of the proportional reversing valve 62 communicates with the oil inlet of the safety valve 61, and the main oil return port of the proportional reversing valve 62 communicates with the safety valve. The main oil return port of 61 is connected; at the same time, the working oil inlet port of the proportional reversing valve 62 is connected to the oil inlet port at the tail end of the lifting main machine barrel 11 of the lifting main machine 1, and the working oil return port of the proportional reversing valve 62 is connected to the lifting The main engine 1 lifts the oil return port at the head end of the main engine cylinder 11. One end of the proportional amplifier 63 is connected to the electric terminal of the proportional reversing valve 62 , and the other end is connected to the potentiometer 64 .

Among them, a safety valve 61 is set to realize automatic overflow and pressure relief when the hoisting load is too large, which plays the role of overload protection; a proportional reversing valve 62, a proportional amplifier 63 and a potentiometer 64 are set to realize the adjustable speed of the hoist. Downward movement control, specifically outputting a continuously adjustable voltage signal to the proportional amplifier 63 by operating the potentiometer 64, and amplifying the signal through the proportional amplifier 63, thereby controlling the proportional reversing valve 62 for reversing and continuously adjustable output pressure/flow Pressure oil to realize the speed-adjustable up and down motion control of the hoisting host 1. The present invention can set multiple hoisting hosts 1 for centralized control, and can realize remote, multi-site, and indoor control; the extension/retraction of the piston rod 12 of the hoisting host is controlled by the electric control system 6, so that the moving pulley block 13 and the static pulley block 14 are relatively Move, thereby drive the rotary hook 32 of hoisting wire rope 3 to lift and put heavy objects up and down.

The invention has a reasonable structural design, can avoid the problem of messy ropes that occur when the drum of the general lifting tool is wound, prolongs the life of the steel wire rope, and improves the drilling efficiency; The machine control part adopts the "electric control" method, which can realize remote, multi-site, and centralized control of multiple devices, and meet the requirements of outdoor and indoor operations, which is safe and efficient.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (7)

1. A hydraulic lifting device for an oil drilling rig, characterized in that: the hydraulic lifting device includes a lifting main frame, a lifting wire rope, a guide pulley and an electric control system; The lifting main frame is fixed on the oil drilling rig, which includes a lifting main frame cylinder vertically installed on the oil drilling rig, a lifting main engine piston rod matched and installed on the lifting main engine cylinder, and a lifting main engine piston rod matched and installed on the lifting main engine The movable pulley block on the head end of the piston rod and the static pulley block matched and installed on the outer wall of the cylinder of the lifting main engine; the main shaft of the movable pulley block and the main shaft of the static pulley block are vertical to each other in space; the lifting main frame The cylinder body is connected to the electric control system through the hydraulic pipeline and connected to the hydraulic system in the oil drilling rig through the electric control system; The guide pulley is installed on the oil drilling rig above the lifting main frame; One end of the hoisting wire rope is fixed on the cylinder body of the hoisting machine, the other end passes through the movable pulley block and the static pulley block, and then passes through the guide pulley and the auxiliary pulley on the crown block to the drill floor in sequence. The other end of the wire rope is also provided with a rotating hook for lifting heavy objects; The electric control system includes a safety valve, a proportional reversing valve, a proportional amplifier and a potentiometer; the safety valve adopts a relief valve, the oil inlet of which is connected to the hydraulic system in the oil drilling rig, and the main oil return port is connected to the hydraulic system of the oil drilling rig. Hydraulic oil return tank; the proportional reversing valve adopts a three-position four-way proportional valve, its oil inlet is connected to the oil inlet of the safety valve, and the main oil return port is connected to the main oil return port of the safety valve; at the same time, The working oil inlet port of the proportional reversing valve is connected to the oil inlet port at the tail end of the cylinder body of the lifting main engine, and the working oil return port of the proportional reversing valve is connected to the oil return port at the head end of the cylinder body of the lifting main engine; One end of the proportional amplifier is electrically connected to the electric terminal of the proportional reversing valve, and the other end is electrically connected to the potentiometer. 2. The hydraulic lifting equipment for oil drilling rigs as claimed in claim 1, characterized in that: the lifting main machine is integrally fixed on the oil drilling rig through a mounting bracket; the cylinder of the lifting main machine is vertically installed through the mounting bracket on the oil rig. 3. The hydraulic lifting device for oil drilling rig according to claim 2, characterized in that: one end of the lifting wire rope is fixed on the mounting bracket and is provided with a buffer spring. 4. The hydraulic lifting device for oil drilling rig as claimed in claim 1, characterized in that: the outer wall of the cylinder body of the lifting main machine is provided with a hydraulic pipe along the length, and a hydraulic pipeline support is welded at the tail end; one end of the piston rod of the lifting main machine It penetrates into the cylinder body of the lifting main machine, and the other end extends out of the cylinder body of the lifting main machine. 5 . The hydraulic lifting device for oil drilling rig according to claim 4 , wherein one end of the hydraulic pipeline passes through the hydraulic pipeline support to match with the hydraulic pipe, and the other end is connected to the hydraulic control system. 6 . 6. The hydraulic lifting equipment for oil drilling rigs as claimed in claim 4, characterized in that: the moving pulley block is matched and installed on the end of the lifting main engine piston rod protruding from the outside of the lifting main engine cylinder, and the static pulley block is matching It is installed on the outer wall of the middle and upper section of the cylinder body of the lifting main machine. 7. The hydraulic lifting device for oil drilling rig according to claim 1 or 6, characterized in that: the number of pulleys arranged on the movable pulley block and the static pulley block is n×n, and n is an even number; passing through the movable pulley block The number of the hoisting wire ropes between the static pulley block and the static pulley block is 2n, and the moving pulley block moves 1 meter, and the corresponding rotating hook arranged on the hoisting wire rope rises or falls by 2n meters.