CN208474571U - A kind of ball-and-seat - Google Patents

Abstract

The utility model discloses a kind of ball-and-seats, belong to oil exploitation, oil gas development technology field.The ball-and-seat includes: the first valve body, the obstruction structure for being set to first valve inner, the spool for controlling fluid unidirectional motion and the second valve body for accommodating the spool；Wherein, the first valve body and the second valve body screwed connection stop structure in the first valve inner perpendicular to axial setting, to intercept spool.The utility model can prevent the spool to fall off from blocking pipeline by the way that the obstruction structure of the first valve inner is arranged in, it can guarantee that pipeline is unimpeded using the ball-and-seat, system pressure is stablized in normal level, not only ensure that the normal operation of equipment, also there is high safety index.

Description

A kind of ball-and-seat

Technical field

The utility model relates to oil exploitation, oil gas development technology field, in particular to a kind of ball-and-seat.

Background technique

In oil exploitation or oil and gas development, usually ball-and-seat is connected on well-flushing pipeline or gaslift pipeline, to prevent The suck-back of fluid, guarantee are normally carried out well-flushing or gaslift operation.For example, when carrying out gaslift operation, when stratum supply When energy is not enough to crude oil giving rise to ground from shaft bottom, gas (natural gas or air) can be passed through eduction column using ball-and-seat Line, which is pressed into shaft bottom, makes crude oil spray ground, wherein gas continues through ball-and-seat in gaslift operation process.

In the related technology, the basic composition of ball-and-seat includes spool and valve core spring, when fluid is from the feed inlet of ball-and-seat Into when, overcome the active force of valve core spring to push spool mobile, so that pipeline is connected, and then fluid is from the discharge port of ball-and-seat Outflow.

At least there is following technical problem in designer's discovery, the relevant technologies:

During prolonged well-flushing or gaslift, spool and valve core spring are likely to occur breaking due to excessively using Split the case where falling off, and the spool to fall off usually can blocking pipeline, the system of in turn resulting in builds the pressure, even equipment damage, seriously Construction operation is affected, while there is also great security risks.

Utility model content

The utility model embodiment provides a kind of ball-and-seat, can solve above-mentioned technical problem.Specific technical solution is as follows:

The utility model provides a kind of ball-and-seat, and the ball-and-seat includes:

First valve body, the obstruction structure for being set to first valve inner, the valve for controlling fluid unidirectional motion Core and the second valve body for accommodating the spool；

Wherein, first valve body and the second valve body screwed connection, the obstruction structure is in first valve body Portion is perpendicular to axial setting, to intercept the spool.

In one possible implementation, the obstruction structure have at least one fluid channel, it is described at least one The diameter of fluid channel is less than the diameter of the spool.

In one possible implementation, at least one described fluid channel includes: positioned at the first-class of central axis Body channel and second fluid channel and the third fluid channel for being located at first fluid channel two sides.

In one possible implementation, the diameter in the first fluid channel is 10mm, the second fluid channel Diameter with the third fluid channel is 5mm.

In one possible implementation, the diameter of the spool is 50mm.

The ball-and-seat in one possible implementation further include: for the righting structure of spool described in righting,

The righting structure is in second valve inner perpendicular to axial setting, and the spool passes through the righting knot Structure.

In one possible implementation, there are two fluid channels for the righting structure tool.

In one possible implementation, the ball-and-seat further include: elastomeric element and for fixing the elasticity The nut of component.

The elastomeric element is wrapped on the spool, the nut and the spool screwed connection；

Wherein, spool described in the fluid forces flowed into from feedstock direction is moved along axial direction to discharging direction, the elastic portion Part is compressed, and the fluid is moved via the obstruction structure to the discharging direction, when no fluid circulates, the elastic portion The elastic force of part acts on the spool, so that the spool is moved along axial direction to the feedstock direction, sets back.

In one possible implementation, the operating pressure of the ball-and-seat is within 35Mpa.

Technical solution provided by the embodiment of the utility model has the benefit that

Ball-and-seat provided by the embodiment of the utility model can be used in well-flushing or gaslift operation, when fluid is by feedstock direction stream When entering ball-and-seat, spool moves opening fluid flow passageway to discharge port along axial direction, and fluid is continued on through from obstruction structure to discharging Direction movement.During prolonged well-flushing or gaslift, even if ball-and-seat spool occur due to excessively using and fall off The case where, the obstruction structure that can be also arranged on the first valve inner is intercepted, so that spool be prevented to enter pipeline.As it can be seen that this The ball-and-seat that utility model embodiment provides can prevent the valve to fall off by the way that the obstruction structure of the first valve inner is arranged in Core blocks pipeline.For the traditional ball-and-seat referred in the related technology, it can guarantee that pipeline is unimpeded using the ball-and-seat, System pressure is stablized in normal level, not only ensure that the normal operation of equipment, also there is high safety index.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 is a kind of cross-sectional view of ball-and-seat provided by the embodiment of the utility model；

Appended drawing reference respectively indicates:

The first valve body of 1-, 2- obstruction structure, 3- spool,

The second valve body of 4-, 5- righting structure, 6- elastomeric element,

7- nut,

201- first fluid channel, 202- second fluid channel,

203- third fluid channel.

Specific embodiment

It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer Type embodiment is described in further detail.

The utility model embodiment provides a kind of ball-and-seat, and as shown in Fig. 1, which includes:

First valve body 1, the obstruction structure 2 being set to inside the first valve body 1, the spool for controlling fluid unidirectional motion 3 and the second valve body 4 for accommodating spool 3；

Wherein, 4 screwed connection of the first valve body 1 and the second valve body stops structure 2 in 1 internal vertical of the first valve body in axial direction Setting, to intercept spool 3.

In the present invention, fluid can be liquid, such as petroleum or water, can also be gas, such as natural gas or air, The utility model embodiment is to this without specifically limiting.

Wherein, screwed connection is also known as threadedly coupled, and one end of the first valve body 1 may be provided with internal screw thread, and the one of the second valve body 4 End may be provided with external screw thread compatible with internal screw thread, realize that the first valve body 1 connects with the reliable of the second valve body 2 by internal and external threads It connects, i.e. the first valve body 1 is tightly threaded together with the second valve body 2.

And the other end of the first valve body 1 is connected with well-flushing pipeline or gaslift pipeline, is discharging direction；Equally, the second valve body 4 The other end be also to be connected with well-flushing pipeline or gaslift pipeline, be feedstock direction.

Ball-and-seat provided by the embodiment of the utility model can be used for during oil exploitation or oil and gas development, and fluid is from second The feedstock direction of valve body 4, which flows into, pushes spool 3 to move along axial direction to discharging direction.In the utility model embodiment, this is singly flowed Valve can be used for well-flushing or gaslift operation, and fluid continues through ball-and-seat in operation process.In prolonged well-flushing or gaslift Cheng Zhong, spool 3 is probably due to excessively using and falling off, and the utility model introduces the first valve body 1 in ball-and-seat and the One valve body, 1 internal vertical is after the obstruction structure 2 being axially arranged, even if spool 3 is fallen off, can also be blocked the interception of structure 2, To prevent spool 3 from entering pipeline.As it can be seen that ball-and-seat provided by the embodiment of the utility model can be by being arranged in the first valve body Obstruction structure 2 inside 1 prevents the spool to fall off from blocking pipeline.Compared to the traditional ball-and-seat referred in the related technology Speech, can guarantee that pipeline is unimpeded using the ball-and-seat, and system pressure is stablized in normal level, not only ensure that the normal fortune of equipment Row, also there is high safety index.

For well-flushing or gaslift operation process, when fluid flows into ball-and-seat by feedstock direction, spool 3 is along axial direction to discharging Mouth is mobile to open fluid flow passageway, and fluid, which is continued on through, to be moved from obstruction structure 2 to discharging direction, therefore on stopping structure 2 It also needs to offer the circulation passage that can be enabled flow through.Further, play the role of stopping spool 3, resistance to make to stop structure 2 The diameter for blocking the circulation passage in structure 2 should be less than stopping the diameter of spool 3.

It should be noted that be illustrated so that circulation passage is circle as an example above, in addition to this, it is set to obstruction knot Channel shape on structure 2 can also be other, for example circulation passage can also be diamond shape, rectangle or ellipse, when fluid channel is it When his shape, size is also can intercept spool 3 as setting benchmark.

Similarly, the quantity of fluid channel and position etc. can also carry out adaptability design according to actual production environment, as long as really It is protected to meet the requirements.Illustratively, the quantity of circulation passage is greater than or equal to 1 any number, and circulation passage can Positioned at stop structure 2 axis on or axis two sides.

In one possible implementation, as shown in Fig. 1, circulation passage is provided in round, and the number of circulation passage Amount is 3, and including the first fluid channel 201 being located on axis, the second fluid channel 202 of axis two sides and third fluid are logical Road 203.

Wherein, when circulation passage is round, it is based on above-mentioned example, the first fluid channel stopped in structure 2 is set 201 diameter can be 10mm, and the diameter of second fluid channel 202 and third fluid channel 203 can be 5mm.

In one possible implementation, the diameter of spool 3 can be 50mm, the utility model embodiment to this without It is specific to limit.

Under normal conditions, when carrying out well-flushing or gaslift operation, the fluid being passed through enters the second valve body 4, and generates and can promote Spool 3 is set to move and then open the pressure of fluid flow passageway to discharge port along axial direction, when no fluid passes through, spool 3 is automatic It returns in situ to prevent reverse flow of fluids.And if the moving direction offset axis of spool 3, when no fluid passes through, spool 3 is then deposited Possibility in situ can not be being automatically returned to, just cannot achieve the effect of ball-and-seat in this way, therefore, to prevent above-mentioned phenomenon from occurring, As shown in Fig. 1, it is also necessary to righting structure 5 is set inside the second valve body 4, to guarantee that spool 3 is moved in axis direction always, And the righting structure 5 is perpendicular to axis direction, in addition, in order to play the centralizing function to spool 3, spool 3 needs guiding through the righting Structure 5.

As an example, as shown in Fig. 1, which may include the fluid channel that periphery is arranged in, Yi Jishe It sets and is used for the bulge-structure of righting spool 3 at center, wherein it is big and another that the internal diameter of the bulge-structure may be configured as side Side is small, such as big close to the side size of feed inlet, and the side size close to discharge port is small, so that righting structure 5 neither hinders Hinder the movement of spool 3, and the centralizing function of spool 3 can be played.

In one possible implementation, one fluid channel, this reality can respectively can be set in the two sides of the bulge-structure With new embodiment to this without specifically limiting.

In one possible implementation, as shown in Fig. 1, ball-and-seat further include: elastomeric element 6 and for solid The nut 7 of the fixed elastomeric element 6, and elastomeric element 6 is wrapped on spool 3, nut 7 and 3 screwed connection of spool, illustratively, The elastomeric element 6 can be spring.

Wherein, spool 3 can be pushed from the fluid that feedstock direction flows into and the elastomeric element 6 that is wrapped on spool 3 is along axial direction It is mobile to discharging direction, when moving initial, due to the side of the bulge-structure of righting structure 5 (close to the side of feedstock direction) Internal diameter is larger can to accommodate elastomeric element 6, therefore spool 3 and 6 associated movement of elastomeric element being wrapped on spool 3, with Movement continue, being finally wrapped in elastomeric element 6 on spool 3 can be due to the other side of the bulge-structure of righting structure 5 (close to discharging direction side) obstruction and elastic deformation occurs, exactly elastomeric element 6 occur elastic deformation be subsequent nothing Spool 3 automatically restores to original position and provides possibility when fluid passes through.

That is, the working principle of ball-and-seat can be concluded are as follows: from feedstock direction flow into fluid forces spool 3 and be wrapped in spool Elastomeric element 6 on 3 is moved along axial direction to discharging direction, and fluid is moved via the circulation passage for stopping structure 2 to discharging direction. In the process, when the elastomeric element 6 being wrapped on spool 3 with spool 3 be moved to jointly righting structure 5 bulge-structure it is another When side, elastomeric element 6, which is blocked, then to be compressed, and when no fluid passes through, the elastic force that elastomeric element 6 generates due to by compression is made Spool 3 is moved to feedstock direction along axial direction for spool 3, is set back.

On the other hand, a kind of operating pressure of ball-and-seat provided by the embodiment of the utility model is applicable within 35Mpa In most of well-flushing or gaslift operation.

The above is merely for convenience of it will be understood by those skilled in the art that the technical solution of the utility model, not to Limit the utility model.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (9)

1. a kind of ball-and-seat, which is characterized in that the ball-and-seat includes:

First valve body (1) is set to the internal obstruction structure (2) of first valve body (1), for controlling fluid unidirectional motion Spool (3) and the second valve body (4) for accommodating the spool (3)；

Wherein, first valve body (1) and the second valve body (4) screwed connection, the obstruction structure (2) is in first valve Body (1) internal vertical is in axial setting, to intercept the spool (3).

2. ball-and-seat according to claim 1, which is characterized in that the obstruction structure (2) is logical at least one fluid Road, the diameter of at least one fluid channel are less than the diameter of the spool (3).

3. ball-and-seat according to claim 2, which is characterized in that at least one described fluid channel includes: positioned at center The first fluid channel (201) of axis and the second fluid channel for being located at first fluid channel (201) two sides (202) and third fluid channel (203).

4. ball-and-seat according to claim 3, which is characterized in that the diameter of the first fluid channel (201) is 10mm, The diameter of the second fluid channel (202) and the third fluid channel (203) is 5mm.

5. ball-and-seat according to claim 1, which is characterized in that the diameter of the spool (3) is 50mm.

6. ball-and-seat according to claim 1, which is characterized in that the ball-and-seat further include: for spool described in righting (3) righting structure (5),

The righting structure (5) in the second valve body (4) internal vertical in axial setting, and the spool (3) pass through it is described Righting structure (5).

7. ball-and-seat according to claim 6, which is characterized in that there are two fluid channels for righting structure (5) tool.

8. ball-and-seat according to claim 1, which is characterized in that the ball-and-seat further include: elastomeric element (6) and use In the nut (7) of the fixation elastomeric element (6)；

The elastomeric element (6) is wrapped on the spool (3), the nut (7) and the spool (3) screwed connection.

9. according to claim 1 to ball-and-seat described in any claim in 8, which is characterized in that the work of the ball-and-seat Pressure is within 35Mpa.