Mechanical mud pump drive

FIELD: mining operation equipment, particularly mud pumps for oil production in difficult-to-access zones.

SUBSTANCE: mud pump drive comprises welded frame 1, frictionless bearing bodies 2 connected to the frame and used as crankshaft 3 supports. Pivotally connected to crankshaft journals are connecting-rods 4 hinged to sliders 5. Each slider 5 has member 9 to be connected to pump piston. Drive has centering orifices K and mounting orifices to connect pump body to frame. Each slider moves along to slideway bearings. Each slideway bearing comprises support unit 6 secured to frame and movable unit 7 fastened to slider. Hinged planetary reduction gear is secured to each bearing body 2. The planetary reduction gear is operatively attached to drive. Drive is provided with independent frictionless bearing bodies. Crankshaft is composite and includes plates, hollow journals and pivots. Reduction gear is of planetary type.

EFFECT: decreased weight and size of mechanical mud pump drive, increased reliability and service life.

2 cl, 10 dwg

 

The invention relates to equipment for mineral extraction and can be used in the composition of the mud pump for oil in remote areas.

Famous mud pump "UNB-600", a mechanical actuator which consists of a molded body, the outer belt and a crank-slider mechanism [1].

The main disadvantages of this equipment is its great weight and dimensions. Therefore, this equipment cannot be delivered to the oil with which no ground-based messages, or it is difficult to lay. It should be noted that in the Russian Federation many oil fields are located in such areas.

Known technical solutions closest to the technical nature of the claimed device is the mechanical part of the mud pump, "PZH (PZ-8) Triplex Mud Pump" [2], which is selected as a prototype. This device consists of a welded frame having a flat shape, which are mounted pump with three cylinders and mechanical part of the actuator, located in one molded case, as well as additional equipment. In turn, the mechanical drive mud pump consists of a gear reducer made in the form of a single-stage cylindrical wheel with external toothing, a crankshaft, the neck of which is hinged mouth is attached to the connecting rods crossheads, each of which is hinged to the connecting rod is rigidly connected to the piston pump, roller bearings, which bearings of the crankshaft. The input shaft of the gearbox has two sites located on different sides of the molded body, designed for connection with the engine. As the output shaft of the reducer is used, the area of the crankshaft. Each slide is made in the form of a crosshead mechanism, in which a bronze bearing glides. However, this device is also quite a lot of weight and dimensions, which complicates its delivery to remote regions of oil production and the subsequent installation for the following reasons. In the present device uses a single-stage spur gear, which has a large wheel and a small gear ratio. This wheel is mounted on the output shaft and an output shaft aligned with the crankshaft. Hence the axis of the specified wheel and the crankshaft is located far from the base of the gearbox (welded frame). This, in turn, leads to the necessity to have a large size. The lower crankcase) of the specified body transmits load from the crankshaft to the frame. Therefore, it must be strong and rigid, which also leads to an increase in the weight of the body, which, being cast iron, and eat less than steel, the elastic modulus and strength characteristics. The combination of the output shaft of the reduction gear to the crankshaft increases its length, decrease stiffness and increase the load on the bearings, which also requires increasing Diametric size and weight specified shaft, and required bearings high load capacity. Increasing Diametric size of the specified shaft, including journals for installation of rods leads to an increase in size bearings to install the rods and the size of the actual rods. Due to the fact that a welded frame has a flat shape, for fastening of the pump and its mechanical drive requires a large frame dimensions in plan and its weight, but because of the fact that the axis of the crankshaft is high relative to the frame, for mounting the pump requires additional support. In crosshead mechanism crosshead glides, which reduces the reliability and durability of the entire drive, and also leads to the necessity of stopping the production of oil to replace crosshead mechanism. All of these disadvantages of this device significantly complicate its use in remote areas of oil production [2].

The objective of the invention is to reduce the weight and size of the mechanical drive mud pump, as well as increase its reliability and Dolgova the property.

This object is achieved in that the mechanical drive drilling pump is provided with two housings with seals, each of which has a bearing, and the guide bearings with seals, each of which consists of a base and mobile units, gear reducer made planetary, housing the gear reducer made in hinged and crankshaft - teams, with each slider fixed the moving parts of the two guide bearings, the bearings all the guide roller mounted on a welded frame at the same distance from the axis of the crankshaft, and the latter consists of rigidly interconnected plates and necks made in the form of thick-walled pipes, and Zapf under the bearings, made in the form of hollow parts and having structural elements for connection with the output shaft of the gearbox, with each case of the rolling bearing has a centering surface for installation of the gear housings and parts to secure it, and the frame has a spatial form, and its main load-bearing parts are made of hollow profiles. In addition, the connection of each pin is under the rolling bearing with a corresponding plate is executed using the profile link.

The invention is illustrated the accompanying drawings, where:

- figure 1 shows a General view of the actuator;

- in 2 SSV is Zan view a in figure 1;

- figure 3 shows a view B in figure 1;

- figure 4 shows a view In figure 1;

- figure 5 shows the G in figure 3 (enhanced);

- figure 6 shows a section along d-D in figure 1 (enhanced);

- figure 7 shows a section along E-E in figure 5 (rotated and enlarged);

on Fig shows a General view of the crankshaft (enhanced);

- figure 9 shows the W on Fig (enhanced);

- figure 10 shows a section through And figure 9 (rotated and enlarged);

Mechanical drive mud pump, see figure 1, consists of a welded frame 1, on which are fixed two housings 2, designed for installation of the crankshaft 3. On each of the crankshaft 3 pivotally mounted connecting rods 4, which are also pivotally connected to the slide 5, see figure 1.

Each slide 5 is moved along two guide rails, each of which consists of the reference node 6 and the mobile unit 7, see figure 1, 2 and 6. Moving parts 7 guides, see Fig.6, mounted on the slide 5, the bearings 6 is welded on the frame 1, and with the seal 8 is held in the guide lubrication and they are protected from dirt and water.

On each slide 5, see figure 1, the pinned item 9, which is intended for connection with a piston pump (pump not shown). For fastening the pump body on a welded frame 1, see figure 4, are the base of the hole and the hole of the "L" under the threaded fastener, which in the drawings, the AK and the pump, is not shown.

The crankshaft 3, see figure 3, can be any end to connect to the mounted planetary gear 10 having an input shaft 11 with a plot of "M"intended for connection with the engine, which is not shown. Reducer 10 can be installed on any building 2, see figure 3, using special covers 12, 13 pins, nuts 14 with locking washers 15 and pins 16.

The crankshaft, see Fig consists of rigidly interconnected plates 17, necks 18 and pins 19. Stubs are bearings 20 with seals 21, see Fig.7, which, in turn, are mounted in the housings 2. The neck 18 is made to reduce weight in the form of thick-walled pipes and axle 19 in the form of hollow parts. In the plates 17 are made blind holes "H" to connect with tails 18 planting with tension. In end plates made of undercut "P" square shape for the profile connection with the tensioning plate and the corresponding cervical, see Fig.9. In addition, the neck is a through hole for attaching the neck to the plates using stem connections, see figure 10.

A feature of the Assembly of mechanical drive mud pump is as follows. Take the left plate, see Fig, and right in her face twisted pair of studs. Also in the right ends of the two middle plates, see Fig, twisted pair of studs. Sequentially on each plate by pins us what newlifem neck, which is injected into the blind hole of the plate. While the studs pass through holes made in the neck, see figure 10. On the neck, connected to the left plate, adjustable connecting rod with a bearing, which is the pivot for the rod that is installed on the crankshaft. Then, the node connected to the next plate, which is connected with the neck. Position studs that are screwed into the left plate, and their length is chosen so that the threads of these pins protrude from the right edge of the next plate on the length needed in order to install the lock washer and tighten the nut. Next on the neck connected with the following plate, install the connecting rod bearing and so on. The Assembly is completed by installing the extreme plates, see Fig, Zapf, which are attached to these plates by screws with locking washers.

Assembly is simplified if each bearing, which is a hinge for connecting rod mounted on the crankshaft, is collapsible in the axial plane design. In this case, the rod also need to make collapsible. With this arrangement reduces the capacity of the specified bearing and stiffness of the rod, the production of which is becoming more expensive.

Mechanical drive mud pump operates as follows. Input shaft navesnoj the planetary gear is connected by a coupling to the motor shaft, see figure 3. On a welded frame 1, see figures 1 and 4, is attached to the pump, the pistons of which are connected with details 9 slide 5. The motor starts and rotates the crankshaft, floaters, making a reciprocating motion along the guide rails, pass the specified movement of the piston of the pump. The pump pumps the liquid.

The device is a prototype, having a large weight and dimensions, it is difficult to deliver to remote areas of the oil and move it to the oil production area. In addition, for the same reasons, more difficult to assemble with the pump and motor, as well as repair and replacement of components. The proposed device, which is the actuator for the same pump and driven by the same engine as the device is a prototype, has about 2...2,5 times less weight and 1.5 times smaller dimensions. Hence, the proposed device is easier to deliver to remote areas of oil production, easier to transport and easier to assemble and repair. The device is a prototype equipped with a crosshead mechanism, they have low durability and to replace which you must stop the drive and disassemble the Assembly. In the inventive device crosshead mechanism replaced slideway bearings with greater durability, you do not require shutting down the drive to replace worn parts.

Sources of information

1. Cut the log products Bulanash engineering plant (http://www.generation.ru/bulanash.php).

2. The prospectus of the company Gardner Denver "PZH (PZ-8) Triplex Mud Pump" Bulletin 15-251, Version 5 (http://www.gardner-denver.com).

1. Mechanical drive mud pump, containing mounted on a welded frame gear reducer having an output shaft and input shaft with a plot intended for connection with the engine crankshaft, mounted on two roller bearings with tails, each of which is pivotally mounted a connecting rod, crosshead, each of which is hinged to the rod and is the item designed for connection with the piston of the pump, characterized in that the mechanical drive drilling pump is provided with two housings with seals, each of which has a bearing, and the guide bearings with seals, each of which consists of supporting and rolling nodes, gear reducer made planetary, his body is mounted, and the crankshaft - teams, with each slider fixed the moving parts of the two guide bearings, the bearings all the guide roller mounted on a welded frame at the same distance from the axis of the crankshaft, and the latter consists of rigidly interconnected plates, journals, made in the form of thick-walled pipes, and Zapf under the bearings, made in the form of hollow parts and having structural elements for connection with the output shaft of the gearbox, each to bus the rolling bearing has a centering surface to install the gear housings and components for secure, the frame has a spatial form, and its main load-bearing parts are made of hollow profiles.

2. Mechanical drive mud pump according to claim 1, characterized in that the connection of each pin is under the rolling bearing with a corresponding plate crankshaft performed using the profile link.



 

Same patents:

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3 cl, 6 dwg

FIELD: mechanical engineering; hydraulic machines.

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EFFECT: reduced size and extended range of suitable drives.

4 cl, 5 dwg

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FIELD: deep-hole drilling and well repair, particularly for rotary drilling and repairing oil and gas wells.

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4 cl, 5 dwg

FIELD: mining operation equipment, particularly mud pumps for oil production in difficult-to-access zones.

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2 cl, 10 dwg

FIELD: oil and gas industry.

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1 cl, 5 dwg

Proportioning pump // 2244160

FIELD: power engineering' chemical, food, medicine and other industries.

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where is cyclic delivery of addition by one pump; is minimum cyclic delivery of addition by one pump; F is pump plunger area. Summary value X of limited displacement of two selectors is where and is displacement of first and second selector, respectively.

EFFECT: provision of automatic regulation of optimum amount of metered out addition.

3 dwg

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EFFECT: enhanced reliability and efficiency.

1 dwg

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EFFECT: the invention ensures increased efficiency of systems of the field gathering and transportation of petroleum and to reduce power and material inputs.

2 cl, 1 dwg

FIELD: compression and delivery of gases and gas-and-liquid mixtures at drilling, completion and operation of gas and oil wells.

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EFFECT: enhanced stabilization of hydraulic seal; facilitated maintenance and repair of device.

5 cl, 1 dwg

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FIELD: hydraulic machine building; designing of pumps and hydraulic motors.

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EFFECT: improved process of assembling.

6 dwg

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FIELD: automotive industry.

SUBSTANCE: piston (20) of pump (10) is made of sleeve and plastic housing (24) of the valve seat pressed into the sleeve. Sealing nib (24) is made in block with housing (24) of the valve seat and mounted from the side of high pressure. Returning spring (38) bears on housing (24) of the valve seat through piping bearing member (34) at a distance from seat (3) of the valve provided on housing (24) and at a distance from sealing nib (32) mounted on housing (24) of the valve seat, which prevents seat (30) of the valve and sealing nib (32) against distortion due to the action of returning spring (38). There is a groove in the housing of seat (30) of the valve between the housing and sealing nib (38). The rest member abuts against bottom (36) of the groove.

EFFECT: simplified manufacturing.

6 cl, 2 dwg

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