CN2329762Y - Double ball double valve port socking valve for oil-well pump - Google Patents

Abstract

The utility model discloses a socking valve with double balls and double valve ports for an oil pump of an oil well, being suitable for a deep well oil pump with assemblies of a pump barrel, a plunger and a discharge valve. The utility model comprises a valve ball, a valve seat, a valve chamber and a valve casing; the valve seat is positioned at one end of the valve chamber, the valve ball which is positioned in the valve chamber can be moved axially, the valve ball is matched with the port of the valve seat, a flow channel is arranged between the valve ball and the valve chamber, wherein, a lower suction valve is connected at the entrance of the valve seat. The utility model can realize the simultaneous working of double valves, so that the burden of a single valve can be reduced; or the lower suction valve is taken as a spare valve, so that the suction valve which has untight closing can be replaced at any time, and accordingly, the service life of a standing valve can be extended.

Description

Two ball bivalve mouth inlet valves of oil-well pump of oil well

The utility model relates to a kind of standing valve of oil-well pump of oil well, is used for the oil-well pump device of oilfield, especially can serve as any standing valve with deep-well oil pump of pump barrel piston and discharge valve assembly.

When oil well pump is worked, influence the operating efficiency of pump if leakage takes place standing valve (claiming inlet valve again), severe patient can not be pumped pump and is caused the oil well stopping production, thereby the valve ball of standing valve (claiming inlet valve again) and the sealing reliability between the valve seat mouth directly influence the crude output and the energy utilization ratio in oil field.Conventional oil well oil-pumping pump inlet valve structurally generally adopts the structure design of a valve ball and a valve seat, like this no matter be that valve ball damages or the damage of valve seat mouth all can cause oil-well pump of oil well to reduce in down-hole efficient.In the prior art, the structure of inlet valve also has valve seat of employing to join the situation of a valve ball and a lower valve ball, under this kind situation, the compression shock that well liquid produces when flowing through valve module, force valve ball random motion up and down, the valve member that this motion causes weares and teares mutually and has accelerated the damage of valve seal, and the valve member life-span that makes a this valve seat join a valve ball and a lower valve ball is limited.At present, for improving the working life of oil well oil-pumping pump inlet valve, the material that normally chooses is processed valve ball and valve seat mouth with the heat treatment of carrying out necessity, strengthen the valve of underground work and the sealing reliability between the valve seat mouth by the measures such as mechanical performance, machining accuracy and corrosion resistance that improve valve and valve seat mouth, thereby prolong the working life of standing valve, this inevitable manufacturing cost that increases valve member greatly.

The purpose of this utility model is to avoid the defective and the deficiency of prior art, and making is not increasing under the prerequisite of complex process degree and cost substantially, reaches the purpose that prolongs the standing valve working life.

The purpose of this utility model is achieved in that two ball bivalve mouth inlet valves of the utility model oil-well pump of oil well, after combining oil well pump with pump barrel, piston component and discharge valve assembly by linkage, be contained in and be located on the oil well oil-pumping tubing string, inlet valve comprises valve ball, valve seat, valve pocket and valve chest, valve seat is positioned at an end of valve pocket, valve ball is positioned at valve pocket and can moves axially at valve pocket, in the valve pocket entry position, valve ball and valve seat mouth are complementary, has runner between valve ball and valve pocket, wherein, the entrance of valve seat is connected with a low suction valve.

Because the two can the using and the reserved also can enable low suction valve and inlet valve simultaneously, like this, after the situation of the using and the reserved makes the inlet valve driving fit not tight, by enabling the mode of standby low suction valve, reach the purpose that prolongs the standing valve working life (this kind enable standby low suction valve mode be full automatic); And the situation of enabling simultaneously makes this inlet valve when work, bivalve is closed jointly and is opened, and realizes dividing the means of press seals safety effect, and the fluid column active force is shared jointly by bivalve when making the oil well pump descent of piston, thereby prolong the application life of each valve, satisfy requirement of the present utility model.

To sum up, the utility model is by connecting low suction valve in the valve seat entrance, and the realization bivalve is worked simultaneously and reduced the single valve burden or be provided with to replace the purpose that prolongs the standing valve working life to reach at any time after service valve makes the inlet valve driving fit tight.

Below, with specific embodiment the utility model is further specified in conjunction with the accompanying drawings:

Fig. 1 is the position view of a specific embodiment in the oil well down-hole string of the utility model oil well oil-pumping pump inlet valve;

Fig. 2 is the structure sectional view of a specific embodiment of the utility model oil well oil-pumping pump inlet valve;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the B-B sectional view of Fig. 2;

Fig. 5 is the C-C sectional view of Fig. 2.

Two ball bivalve mouth inlet valves 1 of the utility model oil-well pump of oil well, after combining oil well pump with pump barrel 2 ', piston component 3 ', discharge valve assembly 4 ' by linkage, be contained on the oil well oil-pumping tubing string 5 ', Fig. 1 is the position view (6 ' be sucker rod) of an one specific embodiment in the oil well down-hole string.

Referring to Fig. 2, two ball bivalve mouth inlet valves 1 of the utility model oil-well pump of oil well, comprise valve ball 2, valve seat 3, valve pocket 4 and valve chest 5, valve pocket 4 and valve chest 5 can be made one (referring to the situation of present embodiment among Fig. 2), valve seat 3 is positioned at an end of valve pocket 4, valve ball 2 is positioned at valve pocket 4 and can moves axially at valve pocket 4, at valve pocket 4 entry position i, valve ball 2 is complementary with valve seat mouth 31, and (valve seat mouth 31 is generally two independently parts with valve seat 3, valve seat mouth 31 welding-ons are in valve seat 3), 4 of valve ball 2 and valve pockets have runner f, at valve pocket exit position e, valve ball 2 is complementary with valve pocket outlet 41, has runner f (the axial schematic diagram of valve pocket 4 and runner f is referring to Fig. 3) outside valve pocket outlet 41 peripheries.Wherein, the entrance, entrance of valve seat 3 is connected with a low suction valve 1 ^*

Low suction valve 1 ^*Composition structure and function similar to inlet valve 1, comprise lower valve ball 2 ^*, lower valve base 3 ^*, lower valve chamber 4 ^*With following valve chest 5 ^*, lower valve chamber 4 ^*With following valve chest 5 ^*Can make one (referring to the situation of present embodiment among Fig. 2), lower valve ball 2 ^*Be positioned at lower valve chamber 4 ^*In and can be at lower valve chamber 4 ^*In move axially, at lower valve chamber 4 ^*Entry position i ^*, lower valve ball 2 ^*With lower valve base mouth 31 ^*(lower valve base mouth 31 is complementary ^*With lower valve base 3 ^*Be generally two independently parts, valve seat mouth 31 ^*Welding-on is at valve seat 3 ^*In), lower valve ball 2 ^*With lower valve chamber 4 ^*Between have runner f ^*At lower valve chamber 4 ^*Exit position e ^*, lower valve ball 2 ^*With lower valve chamber outlet 41 ^*Be complementary, have runner f outside the lower valve chamber outlet periphery ^*(valve pocket 4 ^*And runner f ^*Axial schematic diagram referring to Fig. 5).

Radial and axial fit system between above-mentioned valve ball and valve pocket access makes the radial and axial operating position of valve ball be subjected to control, and this control is depended on valve pocket radially and the geometry size between the access fully, this size as required, design is determined.

Lower valve chamber outlet 41 ^*The place can install magnet 7, at this moment, and at lower valve chamber 4 ^*Exit position e ^*, lower valve ball 2 ^*With magnet 7 and lower valve chamber outlet 41 ^*Be complementary.Under inlet valve 1 normal operation, lower valve ball 2 ^*Attracted whole low suction valve 1 by magnet 7 ^*Be in stand-by state.

Between the inlet of valve seat and low suction valve, can also connect a rotational flow generator 6 (its axial schematic diagram is referring to Fig. 4).

Referring to Fig. 2, rotational flow generator 6 is for revolving shape flow deflector 61 more than the leaf that links together by linkage.Wherein linkage can be for being positioned at the wheel disc 62 that revolves on the shape flow deflector circumcircle, revolves 62 on shape flow deflector 61 and wheel disc and be connected at the place, point of contact.

When oil-well pump of oil well aspirates, the well liquid rotational flow generator 6 of flowing through earlier enters valve seat inlet 31 again, in rotational flow generator 6, revolve under the effect of shape flow deflector 61, well liquid rotates and advances, eddy flow well liquid enters the mouth 31 when pushing valve ball 2 open from valve seat, because the effect of frictional force, cause valve ball that (d to) as shown in the figure rotation takes place radially when up, this being rotated in when valve ball 2 moves upward constantly taken place, thereby when valve ball 2 is fallen after rise with constantly grindings mutually of valve seat mouth 31, realize the be complementary precision-fit on mating face of valve ball 2 and valve seat mouth 31, prolonged the valve member life-span.

The entrance of lower valve base 3 ' is connected with a filter screen 8 that shell 81 (the side head as this inlet valve has the function that is connected with miscellaneous part concurrently, as in the present embodiment, with being connected of oil well oil-pumping tubing string 5 ') is housed.Link together (linkage 9 in fact, herein promptly can be regarded this suction valve housing as) by linkage 9 between valve chest 5 and the filter screen shell 81.Concrete connected mode can be one to have the hollow tube of interior screw thread for: linkage 9, the corresponding site of valve chest 5 and shell 81 has male thread, between linkage 9, valve chest 5 and the shell 81 by after the screwed connection, with valve seat 3, rotational flow generator 6, valve chest 5 down ^*, lower valve base 3 ^*Be pressed together with filter screen 8.

Two ball bivalve mouth inlet valves of the utility model oil-well pump of oil well are work like this: when oil-well pump of oil well aspirated, well liquid entered this inlet valve through the shell 81 of filter screen 8, was filtered by filter screen 8 earlier, because lower valve ball 2 ^*Attracted by magnet 7, the well liquid after the filtration is directly through lower valve chamber 4 ^*In runner f ^*Enter rotational flow generator 6, the effect of revolving shape flow deflector 61 in the rotational flow generator 6 makes to rotate from the well liquid that wherein flows out advances, eddy flow is pushed valve ball 2 open immediately under valve seat inlet 31 is during from valve ball 2, the effect of frictional force is advanced valve ball with rotation when up well liquid produces radially turn displacement, and this displacement constantly takes place when valve ball 2 is upwards worked.After valve ball 2 moves upward to valve pocket exit position e, valve ball 2 is complementary with valve pocket outlet 41, just (valve pocket radially and the design of the geometry size between the access from the outer runner f outflow of valve pocket outlet 41 peripheries for a large amount of well liquid, make this outflow under size prerequisite little, rational in infrastructure, it is convenient to flow out), the well liquid that flows out is extracted out for oil well pump under the effect of piston 3 ', blow off valve 4 '.

When the piston 3 ' of oil well pump and blow off valve 4 ' were descending, valve ball 2 fell after rise under the deadweight condition, is seated on the valve seat 3, and is complementary with valve seat mouth 31, finishes the work period of this inlet valve.

When valve ball 2 and valve seat mouth are sealed and matched good no liquid when spilling, lower valve ball 2 ^*Be in the come-up state and do not fall after rise under the effect of magnet 7, when valve ball 2 and the bad wastage of valve seat mouth 31 sealings were excessive, the well liquid that spills can axially act on lower valve ball 2 downwards ^*On, form downward motive force, when this power acts on lower valve ball 2 greater than magnet 7 ^*Attraction the time, lower valve ball 2 ^*Promptly fall after rise and lower valve base mouth 31 ^*Sealing is in conjunction with closing back the liquid runner, played to work as valve ball 2 and cooperate salvage under the malfunctioning situation with valve seat mouth 31, reached standby purpose automatically.

The magnet 7 of the utility model can be at lower valve ball 2 ^*Leave loss of excitation in the very short time behind the magnet 7, guarantee lower valve ball 2 ^*With lower valve base mouth 31 ^*Between operate as normal.

The utility model under the situation that magnet 7 is not set, valve ball 2 and valve seat mouth 31, lower valve ball 2 ^*With lower valve base mouth 31 ^*Work simultaneously and play bivalve and close simultaneously and open, realize dividing a means of press seals safety effect, promptly the fluid column active force can be by valve ball 2 and valve seat mouth 31, lower valve ball 2 during the oil well pump descent of piston ^*With lower valve base mouth 31 ^*Share jointly.

Like this, because the two can the using and the reserved also can enable low suction valve and inlet valve simultaneously, after the situation of the using and the reserved makes the inlet valve driving fit not tight, by enabling the mode of standby low suction valve, reach the purpose (this kind enables the mode of standby low suction valve because the existence of magnet 7 is full automatic) that prolongs the standing valve working life; When the situation of enabling simultaneously makes the work of this inlet valve, bivalve is closed simultaneously and is opened, and realizes dividing the means of press seals safety effect, and the fluid column active force is shared jointly by bivalve when making the oil well pump descent of piston, thereby prolong the application life of each valve, satisfy requirement of the present utility model.The above is a key point of the present utility model.

In addition, the effect of rotational flow generator 6 is constantly rotated valve ball when up, when this rotation makes valve ball 2 fall after rise on valve seat 3, the two grinds mutually, continuous automatic grinding in this inlet valve course of work, guarantee the permanent precision-fit of valve ball 2 and 31 sealing surfaces of valve seat mouth, further prolonged application life of the present utility model.

Claims (10)

1. two ball bivalve mouth inlet valves of an oil-well pump of oil well, after combining oil well pump with pump barrel, piston component and discharge valve assembly by linkage, be installed on the oil well oil-pumping tubing string, inlet valve comprises valve ball, valve seat, valve pocket and valve chest, and valve seat is positioned at an end of valve pocket, and valve ball is positioned at valve pocket and can moves axially at valve pocket, has runner between valve ball and valve pocket, in the valve pocket entry position, valve ball and valve seat mouth are complementary, and it is characterized in that the entrance of valve seat is connected with a low suction valve.

2. two ball bivalve mouth inlet valves of oil-well pump of oil well according to claim 1 is characterized in that in the valve pocket exit position, and valve ball and valve pocket outlet are complementary, and have runner outside the valve pocket outlet periphery.

3. two ball bivalve mouth inlet valves of oil-well pump of oil well according to claim 1, it is characterized in that low suction valve comprises lower valve ball, lower valve base, lower valve chamber and following valve chest, lower valve ball is positioned at lower valve chamber and can moves axially at lower valve chamber, in the lower valve chamber entry position, lower valve ball and lower valve base mouth are complementary, and have runner between lower valve ball and lower valve chamber.

4. two ball bivalve mouth inlet valves of oil-well pump of oil well according to claim 3 is characterized in that in the lower valve chamber exit position, and lower valve ball and lower valve chamber outlet are complementary, and have runner outside the lower valve chamber outlet periphery.

5. two ball bivalve mouth inlet valves of oil-well pump of oil well according to claim 3 is characterized in that the lower valve chamber exit has magnet, and in the lower valve chamber exit position, lower valve ball and magnet and lower valve chamber outlet are complementary, and have runner outside the lower valve chamber outlet periphery.

6. two ball bivalve mouth inlet valves of oil-well pump of oil well according to claim 3 is characterized in that the entrance of lower valve base is connected with a filter screen that shell is housed.

7. two ball bivalve mouth inlet valves of oil-well pump of oil well according to claim 1 and 2 is characterized in that being connected with a rotational flow generator between the inlet of valve seat and low suction valve.

8. two ball bivalve mouth inlet valves of oil-well pump of oil well according to claim 7 is characterized in that rotational flow generator is to revolve the shape flow deflector more than the leaf that links together by linkage.

9. two ball bivalve mouth inlet valves of oil-well pump of oil well according to claim 2 is characterized in that described linkage is to be positioned at the wheel disc that revolves on the shape flow deflector circumcircle, revolve between shape flow deflector and wheel disc to be connected at the place, point of contact.

10. according to two ball bivalve mouth inlet valves of claim 1 or 6 or 9 described oil-well pump of oil well, it is characterized in that linking to each other by linkage or direct order between valve chest, following valve chest and the filter screen shell, valve pocket and valve chest, lower valve chamber and following valve chest are made one respectively.

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