CN2348148Y

CN2348148Y - Shuttle valve underground oil pump

Info

Publication number: CN2348148Y
Application number: CN98238153U
Authority: CN
Inventors: 柳振新
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-03
Filing date: 1998-07-03
Publication date: 1999-11-10
Anticipated expiration: 2008-07-03

Abstract

The utility model relates to a shuttle valve oil immersed pump which belongs to the technical field of oil immersed pump. A rotor is driven by a motor to be rotated, and a shuttle valve which is arranged in the rotor makes reciprocal motion, so that medium is sucked in from underground and discharged from the upper part. Due to the increase of the viscosity and the sand content of oil which is extracted in the third period, the existing pump increases pressure through the increase of volume, which brings the problems of oversize weight, etc., and offshore oil extraction also desires a pump which has small size and simple structure. Thereby, the utility model of the characteristics is provided. The shuttle valve oil immersed pump is handy and favorable to the separation of the mixed medium of oil and water. The utility model also has self absorption performance. When the shuttle valve oil immersed pump is opened, air is pumped out, and medium is automatically absorbed upwards. Thereby, energy is saved, and service life is long. The utility model is an ideal updating product for the pump which is used for the industries of oil extraction, chemical industry, etc.

Description

The shuttle valve oil-immersed pump

Technical field is an oil-immersed pump under the utility model shuttle valve oil-immersed pump.The shuttle valve indication is the plunger that is located in the rotor.Before the utility model, the pump kind that is used for oil extraction has three kinds: the first pump of kowtowing, and it two is screw pumps, it three is blade type oil-immersed pumps, these three kinds of pumps face the valve that grease thickness and sand content increase and the lower situation of oil level all shows in various degree and inscribe.The pump volume of kowtowing is huge, is suitable for Fu Jing and recovers the oil, in case oil level is low then the difficulty of recovering the oil is very big.Screw pump is because its stator is the glue lining, in the process of rotor rotation, and the stator that often weares and teares of the silt in the crude oil.Rubber is not durable, and holds and can't stand high pressure, and rubber sleeve and metallic rotator gap do not guarantee, pump pressure is reduced, and working life is short.When petroleum production entered for the 3rd oil recovery phase, oil thickness and sand content increase, screw pump can only add long bolt for increasing pressure, generally add and grow to tens meters, very heavy, screw pump extrude away medium by spiral, makes more even that the medium of mixing stirs in extruding, causes not easily separated for the mixed medium of needs separation.The blade oil-immersed pump is by the multi-stage impeller series connection, supercharging step by step, the pump housing is very long, rotating speed is very high, because of transmitting torque is very big, so transmission shaft is selected expensive alloy axle for use, but folding axle phenomenon still often takes place in the oil field, and the silt that contains in the crude oil knocks impeller when the impeller high speed rotating, and is very big to its influence in working life.

The situation in present most of oil field is that oil level is low in oil exploration industry, need the water filling pressurization to improve oil level, so that exploitation, the 2nd, oil is thick, sometimes oily moisture 0-98%, sometimes water oil-containing 0-98%, the 3rd, sand content is big, provides a kind of new-type oil-immersed pump at the demand and the deficiencies in the prior art the utility model in market.

The purpose of this utility model is: satisfy the needs of present petroleum production, especially can satisfy the needs that offshore platform recovers the oil, the utility model shuttle valve oil-immersed pump volume is little, in light weight, and the suction dielectric viscosity can reach 200PaS.Can independently finish the conveying of air, water, viscous crude and composition thereof, and energy-conservation, long service life.

Content of the present utility model is: the shuttle valve oil-immersed pump mainly by crossover sub, rotor, stuffing box gland, shuttle valve, pump block, the seat of pulling pin, pull pin, spacer ring, box cupling, scraping blade, bearing, Sealing, fastening piece, spring formed.Rotor radially has a vestibule, in vestibule, be equipped with along the reciprocating shuttle valve of vestibule, there is pulling pin that chute is slidingly matched with it at the center of shuttle valve, its axis is parallel with rotor axis, its throw of eccentric is: 2-15mm, pull pin the axle an end be supported on the capacity eccentric bearing sliding sleeve, pull pin the axle the other end be supported on the seat of pulling pin, pulling pin has 3-5 through hole on the seat, communicate with the outlet of box cupling, the seat of pulling pin is fastened on the box cupling with screw, offer the corresponding position of vestibule at rotor, offer equidistant several through holes in a small half of all scopes of pump block, have annular groove on the corresponding smaller part week pump block, annular groove one end arises from the spacer ring before corresponding position, the hole the other end extends to the seat of pulling pin, and has the hole that communicates with the annular groove and the seat of pulling pin on the spacer ring.The both sides of vestibule of dress shuttle valve is parallel in its rotor has two and scrapes film trap each is scraped 2-4 spring arranged in the film trap, and it is uniform to be slightly larger than scraping on the film trap of shuttle valve vestibule diameter along length, and the scraping blade that can be close to pump block under spring action is housed above.Have 3-8 through hole and position grooved ring with the parallel symmetry of shuttle valve vestibule axle on the pump block, wherein the Edge Distance of the two ends of grooved ring and two ends through hole is greater than shuttle valve diameter 3-7mm.On the shuttle valve of shuttle valve oil-immersed pump combined seal ring is housed.

The Oil pump electrical machinery rotation drives the rotor rotation by spline, because the reciprocating plunger that is equipped with in the rotor vestibule.We claim that it is a shuttle valve, chute pulls pin axle one end bearing on the seat of pulling pin in the middle of the shuttle valve, the other end is bearing on the capacity eccentric bearing sliding sleeve in the pump block, shuttle valve is that the limit rotates with rotor, the limit is reciprocating under the effect of the axle of pulling pin of off-centre, this just makes medium suck pump block under rotor rotation and the reciprocating compound motion of shuttle valve, pump block opens that a small half of garden offers 3-8 hole on the central cross-section of shuttle valve vestibule on week, second half garden offers grooved ring on week, grooved ring except that with piston with wide, ring length vertically, extend to spacer ring to the box cupling direction, the oil that the shuttle valve compound motion sucks is gone into the pump housing along the smaller part Zhou Kongliu of pump block and is entered in the grooved ring in the symmetrical little half cycle again, enters then in the several through holes that lead to the seat of pulling pin in the half cycle hole of spacer ring and enters the box cupling well casing outflow from linking to each other with box cupling again.Like this oil-immersed pump just with crude oil from the underground fuel transfer system of getting to ground, in order to increase in the bearing sliding sleeve that its two ends of a resistance to flexure of pulling pin are bearing in pump block shuttle valve hole front end respectively and in the seat of pulling pin of rear end, pump block shuttle valve hole, in order to make suction reliable, combined seal ring is housed on the shuttle valve, in order to improve working life, rotor and pump block all adopt high-wear-resistant alloy.

The performance technologies parameter of shuttle valve oil-immersed pump:

1, lift: 2500M-3000M

2, flow: 8-10M ³/ N

3, can finish the conveying of air, water, viscous crude and composition thereof independently.

4, the peak viscosity of suction medium: 100-200PaS.

5, change input speed, then the flow equal proportion changes, and lift is constant.

6, energy-conservation 25%-40%

7, pump volume is little in light weight (about volume diameter 100mm, about length 500mm, about the about 20KG of weight.)

In conjunction with the accompanying drawings the utility model is further detailed with embodiment of the present utility model below: Fig. 1 is the utility model structural representation, and Fig. 2 is the A-A sectional view of Fig. 1, Fig. 3 sectional view of pulling pin, Fig. 4 capacity eccentric bearing sliding sleeve sectional view.

As shown in Figure 1 oil-submersible motor being connected on crossover sub 1 upper spline cover inserts in the spline of transmission shaft 2, motor is given rotor 19 with transmission of power, the off-centre of seat 13 and 17 of eccentric sliding sleeves 11 the effect of pulling pin owing to pull pin, force shuttle valve 9 to do mechanical to-and-fro motion, axle bed center and the rotor axis of pulling pin as shown in Figure 4 has throw of eccentric, its size is 2-15mm, for having adopted three bearing supporting 22 (a pair of), 30 in the reliable mechanism that makes rotor 19, adopted thrust ball bearing 24 in order to overcome axial force.

At transmission shaft 2 and rotor 19 connecting parts capacity eccentric bearing sliding sleeve 17 is housed in order to increase by 11 the intensity of pulling pin in the seat of pulling pin, pull pin that 11 two ends are bearing in capacity eccentric bearing sliding sleeve 17 respectively and the seat 13 of pulling pin on, pull pin and have the oil of stamping as shown in Figure 3 in 3 holes on the seat and go in the box cupling by 3 orifice flows, in the rotor 19 scraping blade 16 is arranged as shown in Figure 2, under the effect of 2 scraping blade 16 springs 15 near pump block 10, each scraping blade evenly distributes down 3 springs 15 is housed, the rotor shaft front end has little garden nut 20, packing ring 21, seal ring 23 is arranged between pump block and crossover sub, 8 of pump block and stuffing box glands have O RunddichtringO 25, there is spring can regulate elasticity before adjusting circle 7, stuffing box gland 8 is arranged before the rotor 19, O RunddichtringO 27 is arranged on the stuffing box gland 8, combined seal ring 28 is arranged on the shuttle valve, box cupling and pull pin packing ring 29 is arranged between seat, box cupling have fastening screw trip bolt 31 to link to each other with pulling pin between seat.The shuttle valve oil-immersed pump of above structure is if design parameter is a rotating speed: 400 rev/mins, flow is 200M ³/ N, pressure are the pump of 1.6MPa, when speed setting during at 200 rev/mins flow become 10M ³/ N, pressure is constant still to be 1.6MPa.The utility model changes rotating speed, and the constant flow of pressure becomes equal proportion to change.Design a shuttle valve oil-immersed pump root diameter Φ 90mm, shuttle valve diameter of phi 40mm, throw of eccentric 9, during 3000 rev/mins of motor speeds, discharge capacity is 8M ³/ N.Because simple in structure, the little performance in light weight of volume is good, energy-conservation.The utility model has wide prospect in the application of current oil exploration industry especially offshore oil platform.

Claims

1, a kind of shuttle valve oil-immersed pump, it comprises: crossover sub, rotor, pump block, box cupling, bearing, Sealing, fastening piece, it is characterized in that: rotor radially has a vestibule, in vestibule, be equipped with along the reciprocating shuttle valve of vestibule, there is pulling pin that chute is slidingly matched with it at the center of shuttle valve, its axis is parallel with rotor axis, its throw of eccentric is: 2-15mm, pull pin the axle an end be supported on the capacity eccentric bearing sliding sleeve, pull pin the axle the other end be supported on the seat of pulling pin, pulling pin has 3-5 through hole on the seat, communicate with the outlet of box cupling, the seat of pulling pin is fastened on the box cupling with screw, offers the corresponding position of vestibule at rotor, offers equidistant several through holes in a small half of all scopes of pump block, have annular groove on all pump blocks of corresponding smaller part, annular groove one end arises from corresponding position, hole, and the other end extends to the spacer ring before the seat of pulling pin, and has the hole that communicates with the annular groove and the seat of pulling pin on the spacer ring.

2, shuttle valve oil-immersed pump as claimed in claim 1 is characterized in that: in its rotor, the both sides of the vestibule of dress shuttle valve, parallel have two and scrape film trap, each is scraped 2-4 spring in the film trap, it is uniform to be slightly larger than scraping on the film trap of shuttle valve vestibule diameter along length, and the scraping blade that can be close to pump block under spring action is housed above.

3, as claim 1,2 described shuttle valve oil-immersed pumps is characterized in that: along having 3-8 through hole and one and the grooved ring of its position with the parallel symmetry of shuttle valve vestibule axle on the shuttle valve diameter pump block vertical cross-section, wherein the Edge Distance of the two ends of grooved ring and two ends through hole is greater than shuttle valve diameter 3-7mm.

4, it is characterized in that as claim 1,2,3, described shuttle valve oil-immersed pump: combined seal ring is housed on the shuttle valve.