CN2256472Y

CN2256472Y - Rotary wear resistance plunger pump

Info

Publication number: CN2256472Y
Application number: CN 96241117
Authority: CN
Inventors: 张彦; 鲁广立; 冯海; 赵丰利; 罗键; 丛选明; 李长荣
Original assignee: DALIAN MACHINERY FACTORY NO 13
Current assignee: DALIAN MACHINERY FACTORY NO 13
Priority date: 1996-10-18
Filing date: 1996-10-18
Publication date: 1997-06-18
Anticipated expiration: 2006-10-18

Abstract

The utility model relates to a rotary wear resistance plunger pump, which is composed of a pump cylinder, an upper and a lower couplings of the pump cylinder, and a plunger. The utility model is characterized in that a rotator composed of an upper coupling, a lower coupling, a rotating shaft and a shaft sleeve is arranged in the pump cylinder, a ratchet wheel whose two end faces are provided with ratchets is arranged on the rotating shaft of the rotator, the ratchet wheel is matched with a pair of ratchets arranged on the single end face ratchet wheel arranged on the shaft sleeve, and when the rotating shaft moves upwards or downwards, the rotating shaft rotates an angle firstly. The utility model has the advantages of uniformity of plunger wear, long service life, few accidents, and high work efficiency.

Description

Rotary abrasion-proof plunger pump

The utility model relates to and a kind ofly is used for oil field oil pumping and uses plunger pump, relates in particular to the revolvable rotary abrasion-proof plunger pump of a kind of plunger.

In oil field development, the plunger pump of putting forward oily usefulness generally is made up of box cupling under box cupling, the pump barrel on pump barrel, the pump barrel and the plunger be located in the pump barrel, and plunger is connected with sucker rod through upper connection.Its working principle is: when sucker rod drives upper and lower to-and-fro motion by power mechanism, the upper and lower thereupon to-and-fro motion of plunger once, that is located at the plunger two ends this moment upper and lowerly moves about fuel tap and the corresponding keying of fixedly fuel tap of being located at down the box cupling lower end once, and the oil under the oil well oil circuit in the plunger pump barrel is thereupon upwards drawn.The main existing problems of this kind plunger pump are: plunger is easy to wear, its reason is because plunger, pump barrel length are all very long, and the gap is very little again between the two, so as long as have slightly a bit, the to-and-fro motion of plunger makes it very easily cause entire pump to scrap in fixing place wearing and tearing, and is extremely uneconomical.Existing in addition plunger pump set structure of depositing husky groove on plunger also makes plunger pump fragile, so the utmost point need improve.

The purpose of this utility model is to provide a kind of plunger can rotate the rotary-plunger pump of an angle time a time in pump barrel whenever pumping, so that plunger wear is even, and long service life.

The purpose of this utility model is to realize like this, a kind of rotary abrasion-proof plunger pump includes pump barrel, on the pump barrel, following box cupling, be located at the pump barrel inner plunger and be located at plunger up and down two ends on, the lower travelling valve joint, wander up and down valve valve bonnet, valve seat, valve ball, and the standing valve joint of being located at box cupling lower end under the pump barrel, valve bonnet, valve seat, valve ball, it is characterized in that sucker rod is connected with plunger by rotor in pump, rotor is by lower contact on the rotor, rotating shaft, axle sleeve is formed, wherein upper connection is that a upper end is provided with the screw that is screwed with sucker rod lower end screw thread, the lower end is the joint of a thread head that is screwed with axle sleeve upper end screw, lower contact is that a upper end is provided with and the rotating shaft lower end screw that is complementary, the lower end is provided with the joint of the thread head that the screw that is connected with plunger is complementary, rotating shaft is the rotating shaft that can slide and rotate in axle sleeve, its top is provided with ratchet, the lower end has connecting thread, the ratchet of ratchet is located at its both ends of the surface, and both directions are opposite, axle sleeve is that a upper end has the connection screw, the lower end has the cover of the slide opening that is complementary with rotating shaft, connection screw in axle sleeve and slide opening place be provided with respectively the end face that is complementary with ratchet have ratchet on, bottom ratchet wheel.

The rotary-plunger pump of said structure, by rotor sucker rod is connected with plunger, when sucker rod moves upward, rotating shaft is rotated an angle earlier by the effect of the last ratchet on the axle sleeve and its ratchet, simultaneously, also drive plunger and change an angle, then driving plunger makes progress away together, valve closing moves about this moment, fluid is by in fixed valve and then the suction shoe cream room, when air exhaust rod moves downward, rotating shaft is slided earlier then by the angle that makes the rotating shaft rotation that cooperates of the bottom ratchet wheel on its ratchet and the axle sleeve, simultaneously also drive plunger and rotate an angle relative to pump barrel, rotating shaft and plunger are walked downwards in the sucker rod effect together then, and the standing valve of oil is at oil pressure effect ShiShimonoseki valve at this moment, and traveling valve is opened valve because of walking under the plunger, oil in the accumulator makes oil make progress away along the plunger oil circuit, and draws by the oil circuit between rotor and the pump barrel under plunger moves down effect at this moment.The oil pump of said structure, its plunger in upper and lower to-and-fro motion once, drive it by rotor and rotate the secondary angle, back and forth several times, just rotate a circle, the wearing and tearing between plunger and the pump barrel are even like this, and the rotation of plunger is oozed the sand of mixing in fluid and easily made progress away with fluid, thereby sand card phenomenon is improved, i.e. the utilization efficiency height of oil pump.

The utility model has the advantages that: plunger wear is even, the pump long service life, and sand card phenomenon reduces, oil pump utilization efficiency height.

Come structure of the present utility model is described in detail with embodiment and accompanying drawing thereof below

Description of drawings

The overall structure schematic representation of the revolving abrasion-proof plunger pump of Fig. 1 present embodiment

Fig. 2 is the structural representation of rotor part among Fig. 1

Fig. 3 is the structural representation of plunger part

Fig. 4 is following box cupling and fixed oil valve portion structural representation

As seen by shown in Figure 1, the rotary abrasion-proof plunger pump of present embodiment is by being made up of the upper and lower box cupling 1,5 of pump barrel 2, pump barrel and plunger 4 and rotor 3.Formed by upper and lower joint 31,33, rotating shaft 32 and axle sleeve 34 by visible rotor shown in Figure 2.Wherein upper connection 31 upper ends are connected with the screw thread of sucker rod by tapped hole 311, the upper connection lower end is connected with the screw 341 of axle sleeve 34 by screw thread 312, the other end of axle sleeve 34 is provided with the hole 342 that matches with rotating shaft 32, and the inboard symmetry in screw 341 and hole 342 is installed with a pair of ratchet 343,344; Axle 32 its lower ends are provided with the screw thread 321 that is connected with lower contact 33, its upper end portion is provided with a ratchet 322, two end faces of ratchet 322 are provided with ratchet, and this ratchet respectively with ratchet 343,344 interior edge faces on the ratchet that is provided be complementary, both directions are opposite, between ratchet 322 and the ratchet 342,344 spacing is arranged, the slip spacing of rotating shaft 32 is this spacing; Lower contact 33 one ends are connected with rotating shaft 32 by screw 331, and its other end is provided with screw thread 332, and the screw 4411 on it and plunger upper travelling valve valve bonnet 441 tops is screwed.

Basic identical by visible plunger 4 shown in Figure 3 with the plunger of prior art, it is made up of upper and

lower joint

41,43, plunger tube 42, the wander up and down valve bonnet 441,451 of being located at

lower contact

41,43 places, valve seat 442,452,443,453 of valve balls, is provided with the oil groove 46 that is connected with the pump barrel oil circuit on the top of upper travelling valve valve bonnet 441.

As seen by shown in Figure 4, box cupling 5 also is a prior art under the pump barrel, and its upper end is connected with pump barrel 2, and the lower end of box cupling 5 is provided with valve seat 61, valve ball 62, the valve bonnet 63 of standing valve 6 under the pump barrel, and following box cupling 5 is connected with valve bonnet 63 screw threads.

Rotor in the foregoing description it can make plunger link to each other with sucker rod, and plunger is when upwards and down moving, earlier move a less spacing, then rotate an angle with axle, just do subsequently upwards or down big distance moves, it makes plunger wear even, and stability is good when mobile, long service life, and difficult card sand, high working efficiency.

To ooze the sand of mixing in oil and reduce card sand at work as far as possible and cross barrier in order to make, is that sand launder is set on plunger in the prior art, and the shortcoming of this structure is to influence the intensity of plunger own.Present embodiment is taked sand launder in the air on the plunger, from increasing plunger intensity, and will prevent that the sand launder compartment of terrain is located on the pump barrel body inwall, and anti-sand launder can be designed to S shape, when plunger pumped, sand can be gone out from sand launder and deliver to the oil pipe on ground along oil pipe.

Claims

1, a kind of rotary abrasion-proof plunger pump includes pump barrel, on the pump barrel, following box cupling, be located at the pump barrel inner plunger and be located at plunger up and down two ends on, the lower travelling valve joint, wander up and down valve valve bonnet, valve seat, valve ball, and the standing valve joint of being located at box cupling lower end under the pump barrel, valve bonnet, valve seat, valve ball, it is characterized in that sucker rod is connected with plunger by rotor in pump, rotor is by lower contact on the rotor, rotating shaft, axle sleeve is formed, wherein upper connection is that a upper end is provided with the screw that is screwed with sucker rod lower end screw thread, the lower end is the joint of a thread head that is screwed with axle sleeve upper end screw, lower contact is that a upper end is provided with and the rotating shaft lower end screw that is complementary, the lower end is provided with the joint of the thread head that the screw that is connected with plunger is complementary, rotating shaft is the rotating shaft that can slide and rotate in axle sleeve, its top is provided with ratchet, the lower end has connecting thread, the ratchet of ratchet is located at its both ends of the surface, and both directions are opposite, axle sleeve is that a upper end has the connection screw, the lower end has the cover of the slide opening that is complementary with rotating shaft, connection screw in axle sleeve and slide opening place be provided with respectively the end face that is complementary with ratchet have ratchet on, bottom ratchet wheel.

2,, it is characterized in that anti-sand launder compartment of terrain is arranged on the inwall of pump barrel cylindrical shell by the described rotary abrasion-proof plunger pump of claim 1.

3,, it is characterized in that anti-sand launder is a S shape by the described rotary abrasion-proof plunger pump of claim 1.