CN205663657U - Reduce hydraulic jet pump of sealed pressure differential - Google Patents

Abstract

The utility model provides a reduce hydraulic jet pump of sealed pressure differential, the pump core has last sealing device, well sealing device, lower sealing device, the downward passageway of the dynamic liquid in upper portion of pump core, the power fluid passageway that makes progress, mix the liquid exhaust port, the pressure cycle room, the mixing chamber, the orifice, well liquid passageway, there is mixed liquid passing away on the upper portion of the pump body, the lower part of the pump body has to pass presses the hole, the pump body and the poor power fluid circulation passageway that forms of the diameter of pump core, the last end entrance of the downward passageway of power fluid lies in on the sealing device, the lower extreme export of the downward passageway of power fluid is arranged in under the sealing device, the power fluid makes progress the passageway and is located down on the sealing device, it is arranged in between sealing device and the sealing device to mix the liquid exhaust port, mix the liquid passing away and mix the liquid exhaust port and communicate with each other, pass to press the hole site under in under the sealing device, the pressure differential that sealing device bore is irrelevant with the degree of depth of going into down, can improve the sealing device's on the hydraulic jet pump reliability, extension sealing device's life.

Description

A kind of hydraulic jet pump reducing seal pressure differential

Technical field

This utility model belongs to the equipment of oil extraction in oil field, is mounted in the hydraulic jet pump of down-hole suction fluid, specifically It it is a kind of hydraulic jet pump reducing seal pressure differential.

Background technology

The pump housing of hydraulic jet pump maintains static with oil pipe G.I.H, and pump core puts into pump in the oil pipe on the pump housing Internal, pump core forms power fluid passage, well liquid passage, mixed liquor passage in the pump housing, makes the energy of power fluid pass to well liquid, Thus well liquid is given rise to ground.Pump core forms power fluid passage, well liquid passage in the pump housing, mixed liquor passage there must be can The sealing leaned on could be formed, once seal failure, and power fluid, mixed liquor will be missed, and hydraulic jet pump cannot lift well liquid. The pressure reduction that the sealing device of existing hydraulic jet pump bears is the pressure of power fluid and the difference of strata pressure and the mixing of discharge Hydraulic coupling and the difference of strata pressure, the two pressure reduction is relevant with depth of stratum, i.e. obtains the deepest pressure reduction under hydraulic jet pump the biggest, The pressure differential that sealing device bears is the biggest, and when the depth of setting of pump is crossed deep, the service life of sealing device is the shortest, seals The reliability of device is the most very poor, causes the with short production cycle of current hydraulic jet pump, and reliability is low, and not reaching Development and Production needs The effect wanted.

Summary of the invention

The purpose of this utility model is to design a kind of hydraulic jet pump reducing seal pressure differential, makes hydraulic jet pump bear Pressure differential with under the degree of depth that enters unrelated, reduce the pressure that hydraulic jet pump bears, the problem overcoming above-mentioned existence, improve waterpower spray Penetrate the reliability of sealing device on pump, extend the service life of sealing device, increase the production cycle of hydraulic jet pump, improve The economic benefit of oil well.

The purpose of this utility model is achieved in that and includes ball-and-seat, the pump housing, pump core, and ball-and-seat is arranged on the pump housing Bottom, the pump housing maintains static with oil pipe G.I.H, and ball-and-seat stops fluid to flow from the top down, can pass through from below Fluid, pump core is put in the pump housing in the oil pipe on the pump housing, pump core formed in the pump housing power fluid passage, well liquid passage, Mixed liquor passage, pump core has upper sealing device, middle sealing device, lower sealing device, the dynamic liquid in top of pump core to lower channel, Power fluid Upwards channel, mixed liquor tap, pressure switch room, mixing chamber, spray orifice, well liquid passage, the bottom of pump core is positioned In the pump housing, mixed liquor passing away is arranged at the top of the pump housing, and the bottom of the pump housing has pressure transmission hole, the pump housing to be formed dynamic with the diameter difference of pump core Power pendular ring circulation road, described power fluid is positioned on upper sealing device to the upper end entrance of lower channel, described power fluid to The lower end outlet of lower channel is positioned under middle sealing device, and described power fluid Upwards channel is positioned on lower sealing device, institute The power fluid circulation channel stated is between middle sealing device and lower sealing device, and described power fluid is to lower channel, power fluid Circulation channel, power fluid Upwards channel communicate, described mixed liquor tap between upper sealing device and middle sealing device, The lower entrances of described mixed liquor passing away is between upper sealing device and middle sealing device, and described mixed liquor is discharged Hole communicates with described mixed liquor passing away, described pressure transmission hole be positioned under lower sealing device pump core and pump housing anchor point it On, the top of described power fluid Upwards channel communicates with described spray orifice, the port of export of described spray orifice and described mixing Room communicates, and the lower end of described well liquid passage communicates with the top of ball-and-seat, and the upper end of described well liquid passage is mixed with described Conjunction room communicates, and described mixing chamber leads to described pressure switch room, and described pressure switch room leads to described mixed liquor row Portal.

The beneficial effects of the utility model are: the pressure differential at upper sealing device two ends is pressure and the discharge liquid of power fluid Pressure differential, the pressure differential at middle sealing device two ends is the pressure differential of pressure and the power fluid discharging liquid, lower sealing device two ends Pressure differential be power fluid pressure with discharge the difference of pressure of liquid, therefore, the pressure differential that this utility model sealing device bears with The degree of depth entered under device is unrelated, decreases the pressure that hydraulic jet pump bears, and overcomes the problem that prior art exists, Ke Yiti The reliability of the sealing device on high hydraulic jet pump, extends the service life of sealing device, increases the production of hydraulic jet pump In the cycle, there is significant economic benefit.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Detailed description of the invention

1 embodiment of the present utility model is illustrated below in conjunction with the accompanying drawings.

As it is shown in figure 1, embodiment of the present utility model includes ball-and-seat 7, the pump housing 8, pump core 9, ball-and-seat 7 is arranged on the pump housing The bottom of 8, the pump housing 8 maintains static with oil pipe G.I.H, and ball-and-seat 7 stops fluid to flow from the top down, can by from The fluid of bottom, pump core 9 puts in the pump housing 8 in the oil pipe on the pump housing 8 and (suppresses propelling movement with high-pressure pump), and pump core 9 is at pump Forming power fluid passage, well liquid passage, mixed liquor passage in body 8, pump core 9 has upper sealing device 1, middle sealing device 3, lower seal Device 6, the dynamic liquid in top of pump core 9 is to lower channel 2, power fluid Upwards channel 5, mixed liquor tap 11, pressure switch room 12, mixing chamber 13, spray orifice 14, well liquid passage 15, the bottom of pump core 9 is positioned in the pump housing 8, and the top of the pump housing 8 has mixed liquor to arrange Going out passage 10, pressure transmission hole 16 is arranged at the bottom of the pump housing 8, and the pump housing 8 forms power fluid circulation channel 4 with the diameter difference of pump core 9, described Power fluid is positioned on upper sealing device 1 to the upper end entrance of lower channel 2, and described power fluid exports to the lower end of lower channel 2 Being positioned under sealing device 3, described power fluid Upwards channel 5 is positioned on lower sealing device 6, described power fluid circulation Passage 4 between middle sealing device 3 and lower sealing device 6, described power fluid to lower channel 2, power fluid circulation channel 4, Power fluid Upwards channel 5 communicates, and described mixed liquor tap 11 is between upper sealing device 1 and middle sealing device 3, described The lower entrances of mixed liquor passing away 10 between upper sealing device 1 and middle sealing device 3, described mixed liquor is discharged Hole 11 communicates with described mixed liquor passing away 10, and described pressure transmission hole 16 is positioned at pump core and the pump housing 8 under lower sealing device 6 Anchor point on, the top of described power fluid Upwards channel 5 communicates with described spray orifice 14, the outlet of described spray orifice 14 End communicates with described mixing chamber 13, and the described lower end of well liquid passage 15 communicates with the top of ball-and-seat 7, and described well liquid leads to The upper end in road 15 communicates with described mixing chamber 13, and described mixing chamber 13 leads to described pressure switch room 12, described pressure Power switch room 12 leads to described mixed liquor tap 11.The effect of pressure transmission hole 16 has two, and one is discharge pressure to be incorporated into The lower end of lower sealing device 6, reduces the pressure differential at lower sealing device 6 two ends；Two when being to need fluid power liquid to return pump core as mixed Close the guiding in channel of liquid.

As it is shown in figure 1, arrow direction is power fluid, well liquid, the flow direction of mixed liquor.

During utility model works, power fluid is squeezed on ground, at upper sealing device 1, middle sealing device 3, lower seal dress Putting under the effect of 6, power fluid enters into the upper end entrance of lower channel 2 through power fluid and reaches spray orifice 14, through spray orifice 14 ejection at a high speed, The pressure making mixing chamber 13 is decreased below the pressure of well liquid passage 15, and well liquid enters after mixing chamber 13 mixes with power fluid and enters Pressure switch room 12, mixed liquor is from becoming at a high speed low speed in pressure switch room 12, and pressure is become discharge pressure from low pressure, through row Portal 11, mixed liquor passing away 10 arrives mixed liquor in pit shaft and returns out passage (installing the well of packer, mixed liquor returns out passage For the annular space of oil pipe Yu sleeve pipe, the well of packer is not installed, mixed liquor application tube can be installed and return out as mixed liquor logical Road), thus given rise to ground.If installing mixed liquor application tube, then the lower end of mixed liquor application tube required simultaneously with Described pressure transmission hole 16 and described mixed liquor passing away 10 communicate.

Claims (1)

1. reducing a hydraulic jet pump for seal pressure differential, including ball-and-seat (7), the pump housing (8), pump core (9), ball-and-seat (7) is pacified Being contained in the bottom of the pump housing (8), the pump housing (8) maintains static with oil pipe G.I.H, and ball-and-seat (7) stops fluid to flow from the top down Dynamic, can be put in the oil pipe on the pump housing (8) in the pump housing (8) by fluid from below, pump core (9), pump core (9) In the pump housing (8), form power fluid passage, well liquid passage, mixed liquor passage, it is characterized in that: pump core (9) has upper sealing device (1), middle sealing device (3), lower sealing device (6), the dynamic liquid in top of pump core (9) upwards leads to lower channel (2), power fluid Road (5), mixed liquor tap (11), pressure switch room (12), mixing chamber (13), spray orifice (14), well liquid passage (15), pump core (9) bottom is positioned in the pump housing (8), and the top of the pump housing (8) has mixed liquor passing away (10), the bottom of the pump housing (8) to have biography Pressure hole (16), the pump housing (8) forms power fluid circulation channel (4) with the diameter difference of pump core (9), and described power fluid is to lower channel (2) upper end entrance is positioned on upper sealing device (1), and described power fluid is close in the outlet of the lower end of lower channel (2) is positioned at Under seal apparatus (3), described power fluid Upwards channel (5) is positioned on lower sealing device (6), and described power fluid circulation leads to Road (4) is positioned between middle sealing device (3) and lower sealing device (6), and described power fluid is to lower channel (2), power fluid circulation Passage (4), power fluid Upwards channel (5) communicate, and described mixed liquor tap (11) is positioned at upper sealing device (1) and middle sealing Between device (3), the lower entrances of described mixed liquor passing away (10) is positioned at upper sealing device (1) and middle sealing device (3) between, described mixed liquor tap (11) communicates with described mixed liquor passing away (10), described pressure transmission hole (16) Be positioned under lower sealing device (6) on pump core and the pump housing (8) anchor point, the top of described power fluid Upwards channel (5) with Described spray orifice (14) communicates, and the port of export of described spray orifice (14) communicates with described mixing chamber (13), and described well liquid leads to The lower end in road (15) communicates with the top of ball-and-seat (7), the upper end of described well liquid passage (15) and described mixing chamber (13) Communicating, described mixing chamber (13) leads to described pressure switch room (12), and described pressure switch room (12) leads to described Mixed liquor tap (11).