CN2224298Y

CN2224298Y - Hydraulic motor for hydraulic piston pump by directly using water as power liquid

Info

Publication number: CN2224298Y
Application number: CN 94245656
Authority: CN
Inventors: 云集田
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-30
Filing date: 1994-11-30
Publication date: 1996-04-10
Anticipated expiration: 2004-11-30

Abstract

The utility model relates to a hydraulic motor for hydraulic piston pump by directly using water as power liquid, which comprises a reversal valve group, a sliding valve, a draw rod, an upper and a lower piston power cylinders and an upper and a lower pistons, being characterized in that the reversal valve group is equipped with the inlet of power fluid, the outlet of power fluid and the flow passages led to the upper and the lower power cylinders; the sliding valve is equipped in the reversal valve group, and an upper annular reversal slot and a lower annular reversal slot are equipped on the sliding valve and respectively corresponded with the inlet of power fluid, the outlet of power fluid and the flow passages of the upper and the lower power cylinders; an oil seal slot and a plurality of annular lubrication slots are also equipped on the sliding valve; the draw rod is a long and thin rod without a slot and passed through the sliding valve for forming an oil storage chamber with the middle part of the sliding valve, and the two ends of the draw rod are connected together with the upper and the lower pistons. The hydraulic motor for hydraulic piston pump by directly using water as power liquid is a fine new product with long service life.

Description

Directly use water as the hydraulic piston pump hydraulic motor of power fluid

The utility model relates to scene, a kind of oil field and carries out the hydraulic piston pump hydraulic motor that can directly use water as power fluid that artificial lift is adopted.

Existing hydraulic piston pump hydraulic motor is difference area-type changement, promptly by guiding valve up and down the pressure difference that under pressure, produces of the area difference of both ends of the surface realize commutation, this just must make power fluid flow through movingly, and the fitting surface of parts could commutate, so component processing required precision movingly is very high, the power fluid of flowing through in it there is very high requirement, and the power fluid of oil field use at present all is a crude oil, moisture content and sand factor are all high, cause the movement parts wearing and tearing of hydraulic piston pump very fast, pump detection period shortens greatly, and part replacement is frequent, the oil extraction operation amount increases, cost improves rapidly, when serious, is forced to change into other pump kind.

The purpose of this utility model is to provide a kind of hydraulic piston pump hydraulic motor that can directly use water as power fluid; this hydraulic motor can all fitting surfaces between parts and power fluid runner be kept apart movingly with commutating; and impose lubricated and oil sealing at fitting surface; realize full oil sealing lubrication protection; not by the pull rod slot commutation; do not play the role of changing, but guidance realizes the mechanical type forced commutation by piston, thereby get rid of of the influence of power fluid quality most possibly the commutation fitting surface by guiding valve upper and lower end face area discrepancy.

The purpose of this utility model is achieved in that

A kind of hydraulic piston pump hydraulic motor that directly uses water as power fluid, by selector valve group 1, guiding valve 2, pull bar is piston power cylinder 4 about in the of 3,5, last lower piston 6,6 ' forms, it is characterized in that: selector valve group 1 is positioned at the hydraulic motor middle part, be the circular crosssection Cylinder, which is provided with power fluid inlet 11, general power fluid outlet 12, outer cylinder in all connecting, be provided with the inner cylinder of all leading to selector valve group 1 towards the power fluid runner 13 of upper piston ram 4 and power fluid runner 14, two runners that lead to lower piston ram 5 in the wall between interior outer cylinder, and inner cylinder and guiding valve 2 are movingly with the hole;

Guiding valve 2 is the long Cylinder in circular crosssection, places the power fluid inlet 11 which is provided with in the selector valve group 1 up and down on two

annular commutation grooves

21,22 and the selector valve group 1; General power fluid outlet 12 and the

power fluid runner

13,14 that leads to upper and lower

piston power cylinder

4 and 5 cooperate when commutation, and the two ends of guiding valve 2 is provided with

diameter reducing part

24,28 and pull bar 3 movingly, also is provided with oil seal groove 25 and a plurality of annular lubrication groove 26 on the guiding valve 2;

Pull bar 3 is the elongate rod of slotless, passes from guiding valve 2 centers, constitutes the lubricated shoe cream room 23 of garden cylindricality with guiding valve 2 middle parts, and pull bar 3 two ends are screwed onto with last lower piston 6,6 '.

Advantage of the present utility model is: the power fluid runner of this hydraulic motor and commutate movingly that all fitting surfaces between parts separate; so be not subjected to the influence of power fluid quality; can directly use water as power fluid; reduce cost; again owing to adopt full oil sealing lubrication protection structure; so the wearing and tearing of commutation movement parts are reduced greatly, and the commutation reliable in action is accurate, the working life of having improved hydraulic motor.

Concrete structure of the present utility model further specifies by following examples and accompanying drawing thereof:

Fig. 1 is the utility model upstroke structural representation

Fig. 2 is the utility model down stroke structural representation

Fig. 3 is the utility model selector valve group schematic representation

Referring to Fig. 1, a kind of hydraulic piston pump hydraulic motor that directly uses water as power fluid, by selector valve group 1, guiding valve 2, pull bar 3, the piston power cylinder 4 up and down, 5, last lower piston 6,6 ' is formed, it is characterized in that: selector valve group 1 is positioned at the hydraulic motor middle part, be the circular crosssection Cylinder, which is provided with power fluid inlet 11, general power fluid outlet 12, outer cylinder in all connecting, be provided with the inner cylinder of all leading to selector valve group 1 towards the power fluid runner 13 of upper piston ram 4 and power fluid runner 14, two runners that lead to lower piston ram 5 in the wall between interior outer cylinder, and inner cylinder and guiding valve 2 are movingly with the hole; Referring to Fig. 3: selector valve group 1 is by protection joint 15, under advance oil extraction joint 15, enterprising oil extraction joint 17, valve body 18 is formed, be provided with a lubricant oil in one sidewall of protection joint 15 and replenish pipeline 151, the upper end of this pipeline is connected with oil seal groove 25 on the guiding valve 2 with the hole, and the lower end communicates with the following power fluid runner 14 that leads to lower piston ram 5; Under advance oil extraction joint 16 and be bolted under the protection joint 15, have a stopping step 161 to be descending dead point on its inner cylinder;

Enterprising row takes out joint 17 and is bolted on the valve body 18, has a stopping step 171 to be up dead point on its inner cylinder;

Referring to Fig. 3; also be provided with a plurality of annular lubrication grooves 26 on the outer garden cylinder of guiding valve 2; connect interior garden cylinder with aperture; communicate with lubricated shoe cream room 23; oil in the shoe cream room 23; supplied with by additional pipeline 151, face reduces the wearing and tearing of commutation kinematic pair under the protection that full oil sealing lubricates greatly so can keep commutating movingly.

Referring to Fig. 1, be hydraulic motor upstroke working drawing, ground high voltage power liquid enters in the pump work tube 7 through oil pipe, by power fluid inlet 11, last annular commutation groove 21, power fluid runner 13 enters ram 4, and it is up to promote piston 6, end to making guiding valve 2 move to upper dead center 171 by lower dead centre 161, to pump outside the well liquid excavationg pump in the cylinder 8 in the upper-end surface of piston 6, give rise to ground through oil sets annular space, meanwhile, following commutation groove 22 on the guiding valve 2 is connected with power fluid runner 14 and general power fluid outlet 12, general power fluid in the lower piston ram 5 is discharged, and lower piston 6 ' is risen under pull bar 3 drives, lower piston oil pumping this moment cylinder 9 suction well liquid.

Referring to Fig. 2 is the down stroke working drawing, this moment, guiding valve 2 was in upper dead center 171 positions, power fluid is by inlet 11, last annular commutation groove 21, power fluid runner 14 enters down ram 5, it is descending to promote piston 6 ', well liquid in the oil pumping cylinder 9 is discharged, give rise to ground through oil sets annular space, meanwhile, following commutation groove 22 and power fluid runner 13 on the guiding valve 2, general power fluid outlet 12 is connected, upper piston 6 descends under pull bar 3 drives, and the general power fluid in the piston power cylinder 4 is discharged, upper piston oil pumping this moment cylinder 8 suction well liquid.

Claims

1, a kind of hydraulic piston pump hydraulic motor that directly uses water as power fluid, by selector valve group (1), guiding valve (2), pull bar (3), piston power cylinder (4) up and down, (5), last lower piston (6) (6 ') is formed, it is characterized in that: selector valve group (1) is positioned at the hydraulic motor middle part, be the circular crosssection Cylinder, which is provided with power fluid inlet (11), general power fluid outlet (12), outer cylinder in all connecting, be provided with towards the power fluid runner (13) of upper piston ram (4) in the wall between interior outer cylinder and lead to the power fluid runner (14) of lower piston ram (5), two runners all lead to the inner cylinder of selector valve group (1) with the hole, and inner cylinder and guiding valve (2) are movingly; Guiding valve (2) is the long Cylinder in circular crosssection, places in the selector valve group (1), which is provided with two annular commutation grooves (21) up and down, the power fluid inlet (11) on (22) and the selector valve group (1); General power fluid outlet (12) reaches the power fluid runner (13) that leads to upper and lower piston power cylinder (4) and (5), (14) when commutation, cooperate, the two ends of guiding valve (2) is provided with diameter reducing part (24), (28) with pull bar (3) movingly, also be provided with oil seal groove (25) and a plurality of annular lubrication groove (26) on the guiding valve (2); Pull bar (3) is the elongate rod of slotless, passes from guiding valve (2) center, constitutes the lubricated shoe cream room (23) of garden cylindricality with guiding valve (2) middle part, and pull bar (3) two ends were screwed onto with last lower piston (6), (6 ').

2, the hydraulic piston pump hydraulic motor that directly uses water as power fluid according to claim 1, it is characterized in that: selector valve group (1) is by protection joint (15), under advance oil extraction joint (16), enterprising oil extraction joint (17), valve body (18) is formed, be provided with a lubricant oil in one sidewall of protection joint (15) and replenish pipeline (151), the upper end of this pipeline is connected with oil seal groove (25) on the guiding valve (2) with the hole, and the lower end communicates with following power fluid runner (14) towards lower piston ram (5); Under advance oil extraction joint (16) and be bolted under protection joint (15), have a stopping step (161) to be descending dead point on its inner cylinder; Enterprising row takes out joint (17) and is bolted on the valve body (18), has a stopping step (171) to be up dead point on its inner cylinder;

3, the hydraulic piston pump hydraulic motor that directly uses water as power fluid according to claim 1 is characterized in that: also be provided with a plurality of annular lubrication grooves (26) on the outer garden cylinder of guiding valve (2), garden cylinder in connecting with aperture communicates with lubricated shoe cream room (23).