RU2191924C2 - Pumping unit with two walking beams - Google Patents

Abstract

FIELD: manufacture of pumps for oil producing industry. SUBSTANCE: proposed pumping unit with two walking beams has frame, electric motor, reduction gear and mechanism for conversion of rotary motion to reciprocating motion. Walking beam is engageable with two rods of pumping units by means of folding horseheads fitted on longitudinal beam. Pumping unit is provided with second walking beam which is connected with mechanism converting the rotary motion into reciprocating motion. One folding horsehead of first walking beam is engageable with horsehead of second walking beam by means of two ropes; one end of each rope is rigidly secured on horsehead of second walking beam and second end is rigidly secured on horsehead of first walking beam, on opposite sides of horseheads. EFFECT: reduced power requirements; increased productivity. 1 dwg

Description

 The invention relates to the field of engineering for the oil industry.

 A technical device is known that contains a foundation, a frame, a rack, an electric motor, a gearbox, a crank, a counterweight, a balancer, a hinged head, a suspension, a rod of a pumping unit, and a wellhead. (Brief Polytechnical Dictionary. M.: State Publishing House of Technical and Theoretical Literature, 1956, p. 886).

 However, the known technical device has significant drawbacks in that it is inefficient, inefficient and does not meet the requirements of energy-saving technologies.

 For each crank revolution, only half of the revolution is used for oil production, lifting the rod of the pump unit up. During the second half of the crank revolution, electricity is used only to lift a heavy counterweight, i.e. 50% of the energy is spent uselessly, unreasonably, thereby increasing the cost of oil, oil products and consumer goods. Irreplaceable energy and money are spent on obsolete equipment.

 It is also known a device containing a frame, an electric motor, a gearbox, a mechanism for converting rotary motion into a reciprocating and balancer, made with the possibility of interaction with two rods of pumping units using two tilt heads mounted on a longitudinal beam (a.s. SU 1372101 A, IPC 7 F 04 B 47/02, 02/07/1988 - prototype).

 However, this technical device also has significant drawbacks in that the proximity of the location of two wells from the drive of the machine and between them complicates the conditions for installation and maintenance of the machine, significantly prolongs the time it is put into operation. In addition, if it is necessary to repair one of the wells, it is necessary to stop the operation of the machine, and therefore, oil production from two wells stops at once.

 Due to these shortcomings, this technical device has not found practical application, and therefore oil production continues on rocking machines of obsolete designs. As before, 50% of working time is spent uselessly on lifting multi-ton counterweights, 50% of the electric energy and funds are spent on the purchase, repair and maintenance of imperfect technological equipment.

 The technical problem to which the invention is directed is to create a more advanced and reliable design of the rocking machine, which provides oil production from two wells simultaneously, with a minimum time for putting it into operation, creating the necessary and more convenient conditions for its maintenance and the possibility of not stop the operation of the machine during the repair of one of the wells and the continuation of oil production from another well.

 The proposed device will reduce energy consumption by 2 times and increase productivity by 2 times.

 This goal is achieved due to the fact that in the proposed device containing a frame, an electric motor, a gearbox, a mechanism for converting rotational motion into reciprocating and balancer, made with the possibility of interaction with two rods of pumping units using two hinged heads mounted on a longitudinal beam, there is a second balancer associated with the mechanism for converting rotational motion into reciprocating, while the folding head of the first balancer is made with the possibility interaction with the folding head of the second balancer with the help of two cables, each of which is rigidly fixed at one end to the head of the second balancer, and the second end to the head of the first balancer, but on opposite sides of the heads.

The set of essential distinguishing features is that:
- The proposed device contains not one but two balancers, each of which is mounted on a separate rack and interacts with the corresponding rod of the pumping unit using a folding head and suspension.

 - One of the balancers interacting with the crank has a folding one head, and the second balancer is equipped with two folding heads. In this case, one of the folding heads of the second balancer is made with the possibility of interacting with the folding head of the first balancer using two cables, each of which is rigidly fixed at one end to the head of the second balancer, and the second end to the head of the first balancer, but on opposite sides of the heads.

 - The frame and gear drive of the pumping unit are not located between two wells, but at a certain distance from them, equal to half the length of the balancer, and on a line passing through the geometrical axes of the mouths of 2 wells.

 The proposed device is illustrated in the drawing, which shows a General view of the device.

 The device comprises a frame 1, an electric motor 2, a reducer 3, a crank 4, a connecting rod 5, a balancer 6, a stand 7, a rod of a pumping unit 8, a wellhead 9, a hinged head 10, a suspension 11, a balancer 12, a stand 13, a hinged head 14, radial a patch with two grooves 16, a cable 17, a cable 18, a rod of a pumping unit 19, a wellhead 20, a hinged head 21 and a suspension 22.

 The described device operates as follows.

 When the electric motor 2 is turned on, the rotational movement is transmitted to the gearbox 3 and the crank 4. The crank 4 turns its rotational motion into the reciprocating movement of the connecting rod 5, into the oscillating motion of the balancer 6 and the reciprocating movement of the rod 8 in the vertical direction, thereby leading into operation a pumping unit for oil production from a well 9.

 The swinging movement of the balancer 6 sets the swinging balancer 12 in motion using the cables 17 and 18, each of which is rigidly fixed at one end to the hinged head 10, and the other end to the hinged head 14, but on opposite sides of the heads.

 The oscillating movement of the balancer 12 leads to the vertical movement of the rod of the pump unit 19 and to oil production from the well 20 using the hinged head 21 and the suspension 22.

 Thus, the proposed device allows the production of oil from two wells. Thus for the first half of the rotation of the crank 4 is the rise of the rod 8 up and the movement of the rod 19 down. For the second half of the crank 4 revolution, the rod 8 is lowered, and the rod 19 rises. Balancers 6 and 12 and rods 8 and 19 are balanced with each other without the use of counterweights.

 In the case of repair work at one of the wells, oil production from the second well does not stop. At this time, a counterweight is used for balance.

 If necessary, change the lifting height of two rods 8 and 19 simultaneously, reinstall the connecting rod 5 on the crank 4.

 To change the lifting height of only one rod, it is necessary to carry out the corresponding movement of the pads 15 and 16, on which the cables 17 and 18 are rigidly fixed, relative to the hinged heads 10 and 14 to the left or right side.

The advantage of the proposed device is as follows:
- reduced energy consumption by 2 times;
- the productivity of technological equipment is increased by 2 times;
- reduced costs for the purchase, repair and maintenance of equipment in 2 times;
- conditions are being created to reduce the installation and commissioning of technological equipment and start oil production from two wells;
- the price of oil and oil products, as well as consumer goods, is reduced;
- reduced consumption of non-renewable energy resources of the country.

Claims (1)

 A rocking machine with two balancers, containing a frame, an electric motor, a gearbox, a mechanism for converting rotational motion into a reciprocating and balancer made with the possibility of interaction with two rods of pumping units using two tilt heads mounted on a longitudinal beam, characterized in that it equipped with a second balancer associated with the mechanism for converting rotational motion into reciprocating, while one of the hinged heads of the first balancer is made with the possibility of mutual odeystviya the head of the second rocker by means of two cables, each of which is rigidly fixed at one end on the head of the second rocker and the other end - on the head of the first rocker, but on opposite sides of the head.