CN200989296Y

CN200989296Y - Crankshaft beam-pumping unit

Info

Publication number: CN200989296Y
Application number: CN 200620011370
Authority: CN
Inventors: 费立奎; 陈莉莉
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-27
Filing date: 2006-10-27
Publication date: 2007-12-12
Anticipated expiration: 2016-10-27

Abstract

The utility model provides a crankshaft-type oil pumping unit consisting of a crankshaft box, a crankshaft positioned in the crankshaft box, three sections of cranks positioned on the crankshaft. The three sections of cranks are distributed circumferentially on the crankshaft in 360 degrees. The crankshaft is connected with an output axle inside a reduction gear box through a junction box. Each section of the crank of the crankshaft is arranged with a connecting rod respectively. Each connecting rod is connected with a piston. The piston is matched with the cylinder liner. The cylinder liner is positioned in the cylinder. The bottom of the cylinder is provided with an opening pump valve. The opening pump valve is connected with the oil T-pieces respectively. The reciprocation of the connecting rod drives the piston to realize a doubled travel, to increase the negative pressure, to improve the oil extraction capacity, to lower the movement performance and to widely enhance the efficiency because of the connection of three sections of cranks and three connecting rods as well as the 360 degrees equal distribution. The utility model needs no high bracket, down-moves the center of gravity and has the advantages of stable movement, safety, reliability and convenient operation and maintenance.

Description

A kind of curved shaft type pumping unit

Technical field

The utility model relates to the pumping unit that use in the oil field, is a kind of curved shaft type pumping unit.

Background technique

The pumping unit of oil field use at present has multiple structure: double donkey head type, down eccentric barbell formula, six linkage types, double-acting wheel type, swing link type, diameter-adjusting and torque-changing formula or the like, the pumping unit of these structures, one class belongs to slide beam, and a class belongs to no slide beam, though the pumping unit of these structures respectively has advantage, but have its general character deficiency: exercise performance is poor, efficient is low, and power consumption is high, and because the machine packet size is big, from great, need bigger ground, one-time investment is more, and the intensity of balancing and accent parameter is big etc.

Summary of the invention

The purpose of this utility model is, a kind of curved shaft type pumping unit is provided, and its adopts curved shaft type structure, and the exercise performance of pumping unit and efficient are improved a lot, and reduces power consumption etc.

The utility model for achieving the above object, be achieved through the following technical solutions: a kind of curved shaft type pumping unit, comprise crankcase, bent axle is installed in the crankcase, 3 sections crank throws are set on the bent axle, 3 sections crank throws are uniform in circumferential 360 ° of bent axle, bent axle is connected with output shaft in the speed reducer by shaft joint, difference installing connecting rods on every section crank throw of bent axle, each connecting rod is connected with piston, and piston cooperates with cylinder sleeve, and cylinder sleeve is installed in the cylinder body, in the bottom of cylinder body the unlatching pump valve is installed, is opened pump valve and be connected with the oil-feed threeway respectively.Opening pump valve has valve body, and the valve body upper end is provided with movable loam cake, and loam cake is connected with bolt, mounting spring on the bolt, and the spring lower end is connected with spring seat.The circulation tube head is installed in the cylinder body outside, and the circulation tube head is connected with water-cooling tube, and the circulation of a water-cooling tube is connected with two cylinder bodies respectively.Cylinder body is installed on the base.First transmission shaft, second transmission shaft and the 3rd transmission shaft are installed in the speed reducer, first transmission shaft, one end is installed belt pulley, belt pulley is connected with motor by belt, first driving cog is set on first transmission shaft, and first driving cog and first gear engagement are provided with second driving cog on second transmission shaft, second driving cog and second gear engagement, second gear is installed on the 3rd transmission shaft, and first gear is installed on second transmission shaft, and the 3rd transmission shaft one end is installed shaft joint.

The bottom valve that described curved shaft type pumping unit is used, comprise coupling shaft, outside thread is set on the coupling shaft, and coupling shaft is connected with valve body, and valve seat is installed in the valve body, valve seat upper end installation activity loam cake, movable loam cake is connected with bolt, mounting spring on the bolt, and spring is connected with spring seat, valve body lower portion is connected with guard shield, offers through hole on the guard shield.4 through holes are evenly offered in the guard shield border.The guard shield bottom is an enclosed construction.

Advantage of the present utility model is: broken the structural design of conventional beam pumping unit, made the pumping unit compact structure, the machine packet size is little, and is in light weight, operational reliability and good stability; Because unlatching pump valve of the present utility model directly is connected with the oil-feed threeway, the oil-feed threeway directly is connected with the four-way valve of oil well mouth, so can reduce the fondational structure cost; Because three crank throws are connected with 3 connecting rods and are uniform in 360 ° of scopes of bent axle, make the to-and-fro motion drive piston motion of connecting rod realize doubling stroke, and increase negative pressure, improved oil production, reduced energy consumption, improved exercise performance, raising by a relatively large margin efficient, the utility model does not need high trestle, center of gravity moves down, good stability, safe and reliable to operation, operation and maintenance are all very convenient etc.

Description of drawings

Accompanying drawing 1 is the utility model structural representation; Accompanying drawing 2 is left TV structure schematic representation of accompanying drawing 1; Accompanying drawing 3 is A-A sectional structure schematic representation in the accompanying drawing 2; Accompanying drawing 4 is the bottom valve structural representations that are used with the utility model pumping unit.

Embodiment

The contrast accompanying drawing is described further the utility model:

A base is arranged shown in the figure, and the various structures of pumping unit are installed on the base.Pumping unit has a crankcase 9, be positioned at pumping unit top, bent axle 12 is installed in the crankcase 9, three sections crank throws are set on the bent axle 12, three sections crank throws are arranged on the substantially horizontal of bent axle 12, three sections crank throws are uniform in circumferential 360 ° of bent axle 12, and bent axle 12 is connected by the output shaft in shaft joint and the speed reducer 20.Difference installing connecting rods on every section crank throw of bent axle 12, the structure of installing on every section crank throw is all identical, with the isostructural broken section of left end crank link among Fig. 1 is that example illustrates its concrete structure: installing connecting rods 10 on the crank throw of bent axle 12, connecting rod 10 lower ends are connected with piston 7, piston 7 cooperates with cylinder sleeve 6, cylinder sleeve 6 is contained in the cylinder body 5, in the bottom of cylinder body 5 unlatching pump valve 4 is installed, that is: pumping unit has 3 connecting rods, 3 pistons, 3 cylinder sleeves, 3 cylinder bodies, 3 unlatching bottom valves, each is opened pump valve and is connected with oil-feed threeway 3 respectively, the filler opening B of oil-feed threeway 3 is connected with four-way valve on the oil well mouth, and the unlatching pump valve structure that install respectively the bottom of three cylinder bodies is identical; Opening pump valve has valve body 4, and valve body 4 upper ends are provided with movable loam cake 37 movable loam cakes 37 and are connected with bolt 36, and mounting spring 34 on the bolt 36, and spring 34 lower ends are connected with spring seat 35.In order to reduce the cylinder sleeve temperature, circulation tube head 8 is installed in cylinder body 5 outsides, circulation tube head 8 is connected with water-cooling tube, the circulation of a water-cooling tube is connected with two cylinder bodies respectively, as shown in Figure 1, one end of Circulation pipe 14 is connected with central housing, and the other end is connected with cylinder body 6, in the front and back of pumping unit 4 Circulation pipes is installed altogether.Drive mechanism of the present utility model has a speed reducer 20 as shown in Figure 2, first transmission shaft 29 is installed in the speed reducer 20, second transmission shaft 28 and the 3rd transmission shaft 26, first transmission shaft, 29 1 ends are installed belt pulley 30, belt pulley 30 is connected with motor 23 by belt, first driving cog 38 is set on first transmission shaft 29,

first driving cog

38 and 25 engagements of first gear, second driving gear 39 is set on second transmission shaft 28,

second driving cog

39 and 27 engagements of second gear, second gear 27 is installed on the 3rd transmission shaft 26, first gear 25 is installed on second transmission shaft 28, and the 3rd transmission shaft 26 1 ends are installed shaft joint 24.The utility model can sink to the bottom valve shown in the accompanying drawing 4 bottom of oil pick-up tube in use, reaches using effect preferably so that cooperate with the utility model.The structure of bottom valve is as shown in Figure 4: comprise coupling shaft 40, on the coupling shaft 40 outside thread is set, coupling shaft 40 is connected with valve body 41, valve seat 44 is installed in the valve body 41, valve seat 44 upper end installation activity loam cakes 42, movable loam cake 42 is connected with bolt 49, mounting spring 43 on the bolt 49, spring 43 is connected with spring seat 46, and valve body 41 bottoms are connected with guard shield 45, offer through hole 47 on the guard shield 45.4 through holes are evenly offered in guard shield 45 borders.Guard shield 45 bottoms are enclosed construction.When the utility model uses, bottom valve is connected with the oil pick-up tube bottom, adds water by aqueduct, after filling diversion in the oil pick-up tube, starting electrical machinery 23 drives the bent axle rotation and starts working.When three connecting rods rotate at bent axle 12, make the to-and-fro motion of 3 connecting rods be in different height and drive piston and realize doubling stroke, work done continuously is because the increase of negative pressure can improve oil production.2 is supports among Fig. 1, the 11st, and bearing, the 15th, flow tee, the 16th, pump valve, the 17th, cooling water Circulation pipe, the 19th, shaft joint, the 21st, belt, the 22nd, belt pulley, the 32nd, second connecting rod lid, the 33rd, third connecting rod lid, the 31st, belt pulley.48 is holes among Fig. 4.

Claims

1, a kind of curved shaft type pumping unit, comprise crankcase (9), it is characterized in that: bent axle (12) is installed in the crankcase (9), 3 sections crank throws are set on the bent axle (12), three sections crank throws are uniform in circumferential 360 ° of bent axle (12), bent axle (12) is connected by the interior output shaft of shaft joint and speed reducer (20), difference installing connecting rods on every section crank throw of bent axle (12), each connecting rod is connected with piston, piston cooperates with cylinder sleeve, cylinder sleeve is installed in the cylinder body, installs in the bottom of cylinder body and opens pump valve, opens pump valve and is connected with oil-feed threeway (3) respectively.

2, a kind of curved shaft type pumping unit according to claim 1, it is characterized in that: opening pump valve has valve body (4), valve body (4) upper end is provided with movable loam cake (37), loam cake (37) is connected with bolt (36), bolt (36) is gone up mounting spring (34), and spring (34) lower end is connected with spring seat (35).

3, a kind of curved shaft type pumping unit according to claim 1 is characterized in that: circulation tube head (8) is installed in cylinder body (5) outside, and circulation tube head (8) is connected with water-cooling tube, and the circulation of a water-cooling tube is connected with two cylinder bodies respectively.

4, according to claim 1,2 or 3 each described a kind of curved shaft type pumping units, it is characterized in that: cylinder body is installed on the base (1).

5, according to claim 1,2 or 3 each described a kind of curved shaft type pumping units, it is characterized in that: first transmission shaft (29) is installed in the speed reducer (20), second transmission shaft (28) and the 3rd transmission shaft (26), first transmission shaft (29) one ends are installed belt pulley (30), belt pulley (30) is connected with motor (23) by belt, first driving cog (38) is set on first transmission shaft (29), first driving cog (38) and first gear (25) engagement, second driving cog (39) is set on second transmission shaft (28), second driving cog (39) and second gear (27) engagement, second gear (27) is installed on the 3rd transmission shaft (26), first gear (25) is installed on second transmission shaft (28), and the 3rd transmission shaft (26) one ends are installed shaft joint (24).

6, a kind of and aforesaid right requires the bottom valve that the described curved shaft type pumping unit of 1-5 is used, it is characterized in that: comprise coupling shaft (40), coupling shaft is provided with outside thread on (40), coupling shaft (40) is connected with valve body (41), valve seat (44) is installed in the valve body (41), valve seat (44) upper end installation activity loam cake (42), movable loam cake (42) is connected with bolt (49), bolt (49) is gone up mounting spring (43), spring (43) is connected with spring seat (46), valve body (41) bottom is connected with guard shield (45), offers through hole (47) on the guard shield (45).

7, a kind of curved shaft type pumping unit according to claim 6 is characterized in that: 4 through holes are evenly offered in guard shield (45) border.

8, a kind of curved shaft type pumping unit according to claim 7 is characterized in that: guard shield (45) bottom is an enclosed construction.