CN216588497U - Centering guide - Google Patents

Abstract

The utility model belongs to the technical field of the oil production instrument, a centralizer is disclosed. This centralizer includes: the centralizer comprises a centralizer base body, a supporting wing rib and a supporting wing rib, wherein a central channel for penetrating through a part to be centralized is formed on the centralizer base body; the two locking rings are respectively detachably connected with the two ends of the centralizer base body, and the two rubber gaskets are respectively positioned between the two ends of the centralizer base body and the corresponding locking rings. Wherein the rubber gasket is configured to be compressively deformed when the locking ring is coupled to the ends of the centralizer base such that the rubber gasket forms an interference fit with the part being centralized. The utility model discloses a centralizer installation is dismantled conveniently, fast, and mounted position can the free choice.

Description

Centering guide

Technical Field

The utility model relates to an oil recovery instrument technical field, concretely relates to centralizer.

Background

Because of the requirements for centering measurement, long and thin structure, support, large underground vibration amplitude and the like, one or more centralizers are often required to be mounted on the components such as a probe tube, a connector and the like in the logging-while-drilling instrument so as to achieve the effects of centralizing, centering, damping and overflowing. The structure of centralizer mainly includes: the centralizer comprises a centralizer base body, a plurality of supporting ribs fixed on the centralizer base body and a fixing structure used for fixing the centralizer base body on a part to be centralized, wherein a slurry channel is formed between adjacent supporting ribs.

The existing centralizer is mounted by connecting with a part to be righted through fixing structures such as set screws and screw connections, the mounting mode has strict requirements on the structure of the part to be righted, and the mounting position cannot be freely selected. Meanwhile, the structure of the centralizer is complex due to the installation mode, and installation and operation are difficult. In addition, the existing installation mode can not ensure the sealing performance between the centralizer and the part to be centralized, so that mud easily invades into a gap between the centralizer and the part to be centralized, and the centralizer can not be detached.

SUMMERY OF THE UTILITY MODEL

Convenient, quick in order to realize the centralizer installation dismantlement, but and mounted position free choice, the utility model provides a novel centralizer.

According to the utility model discloses a centralizer, include: the centralizer comprises a centralizer base body, a supporting wing rib and a supporting wing rib, wherein a central channel for penetrating through a part to be centralized is formed on the centralizer base body; two locking rings which are respectively detachably connected with two ends of the centralizer basal body, and two rubber gaskets which are respectively positioned between two ends of the centralizer basal body and the corresponding locking rings. Wherein the rubber gasket is configured to be compressively deformed when the locking ring is coupled to the ends of the centralizer base such that the rubber gasket forms an interference fit with the part being centralized.

Further, the two locking rings are respectively in threaded connection with two ends of the centralizer base body, wherein the rubber gasket is configured to be compressed and deformed in the screwing process of the two ends of the locking rings relative to the centralizer base body, so that the rubber gasket and the part to be centered form an interference fit.

Further, the rubber gasket includes cyclic annular gasket body, and cyclic annular gasket body includes the butt portion that is used for the embedding portion at embedding center channel's both ends and links to each other with the embedding portion is coaxial, and butt portion butt is between the terminal surface and the locking ring at the both ends of centralizer base member.

Furthermore, a step for abutting against the abutting part is formed in the locking ring, and the abutting part abuts against between the step and the end face of the two ends of the centralizer basal body.

Furthermore, outer threads are formed on the outer peripheral walls of the two ends of the centralizer base body, and inner threads matched with the outer threads are formed on the inner wall, located between one end of the locking ring close to the centralizer base body and the step, of the locking ring.

Furthermore, the two locking rings are respectively clamped with the two ends of the centralizer basal body.

Further, both ends of the central channel of the centralizer base have a bezel slot with an inner diameter width that tapers toward each other.

Further, a groove for fixing and supporting the rib is formed on the outer peripheral wall of the centralizer base body.

Further, the supporting ribs are made of rubber material and are vulcanized and fixed in the grooves.

Further, both the head end and the tail end of the support rib are formed in a pointed shape.

Compared with the prior art, the utility model discloses a centralizer adopts the bloated tight fixed mode of rubber gasket and is linked to each other by the part of rightting, and this fixed mode need not adopt fixed knot structures such as holding screw, consequently need not to set up screw hole or locating hole on by the part of rightting to the centralizer can be according to actual conditions free choice the mounted position on by the part of rightting. Furthermore, the utility model discloses a centralizer passes through rubber gasket's compression to centralizer and by the sealed effect of clearance formation between the part of rightting, can avoid the jam that mud invasion caused to make the centralizer change the dismantlement. The utility model discloses a centralizer installation is dismantled conveniently, swift, and the mounting structure of centralizer is simple, easy operation, and stable, reliable, difficult droing after the installation, and the centering effect is reliable placed in the middle.

Drawings

Fig. 1 is a schematic perspective view of a centralizer according to an embodiment of the present invention;

fig. 2 is a front cross-sectional exploded view of the structure of a centralizer according to an embodiment of the invention;

FIG. 3 is an assembly schematic of the structure of a centralizer according to an embodiment of the invention;

fig. 4 is an enlarged view of a point a shown in fig. 3.

Detailed Description

For better understanding of the purpose, structure and function of the present invention, the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 to 3 show the structure of a centralizer 100 according to an embodiment of the present invention. The centralizer 100 includes: the centralizer comprises a centralizer base body 1, wherein a central channel 11 for penetrating a part to be righted is formed in the centralizer base body 1, and a plurality of supporting ribs 3 are formed on the periphery of the centralizer base body 1 at intervals; two locking rings 2, which are detachably connected to two ends of the centralizer body 1, respectively, and two rubber gaskets 4 (shown in fig. 2), which are respectively located between two ends of the centralizer body 1 and the corresponding locking rings 2. Wherein the rubber gasket 4 is configured to be compressed and deformed when the locking ring 2 is connected to both ends of the centralizer base body 1, so that the rubber gasket 4 forms an interference fit with a part to be centralized (not shown in the figure).

The utility model discloses centralizer 100 is when using, can at first establish 1 cover of centralizer base member on by the rightting part, the hole diameter of centralizer base member 1 is a bit more than by the external diameter of rightting part, then install two rubber gasket 4 at the both ends of centralizer base member 1, connect locking ring 2 on the both ends of centralizer base member 1 afterwards, after locking ring 2 is connected with centralizer base member 1, rubber gasket 4 is by compression deformation, thereby make rubber gasket 4 and by forming interference fit between the rightting part, centralizer 100 was fixed through interference pressure by the rightting part this moment. The rubber gasket 4 may also provide a sealing effect to prevent mud from entering the gap between the centralizer 100 and the part being centralized, thereby affecting the disassembly of the centralizer 100. After the centralizer 100 is used, after the locking ring 2 is disassembled, the deformation of the rubber gasket 4 is recovered, the interference pressure is unloaded, and the centralizer base body 1 can be taken out of the centralizing part after the rubber gasket 4 is taken down.

The utility model discloses centralizer 100 adopts the bloated tight fixed mode of rubber gasket 4 and links to each other with by the part of rightting, and this fixed mode need not adopt fixed knot structure such as holding screw, consequently need not to set up screw hole or locating hole on by the part of rightting to centralizer 100 can be according to actual conditions free choice the mounted position on by the part of rightting. Furthermore, the utility model discloses the centralizer passes through the compression of rubber gasket 4 to centralizer 100 and is right the clearance formation sealing effect between the part, can avoid the jam that mud invasion caused to make centralizer 100 change the dismantlement. The utility model discloses centralizer 100 installs and dismantles convenience, swift, and centralizer 100's mounting structure is simple, easy operation, and install the back stable, reliable, be difficult for droing, and it is reliable to right effect placed in the middle.

In a preferred embodiment, as shown in fig. 3 and 4, two locking rings 2 can be respectively screwed with both ends of the centralizer base body 1, wherein the rubber gasket 4 is configured to be compressed and deformed during screwing of the locking rings 2 with respect to both ends of the centralizer base body 1, so that the rubber gasket 4 forms an interference fit with the part to be centralized. This threaded connection's mode is convenient for on the one hand locking ring 2 and the dismantlement of centralizer base member 1 to be connected, on the other hand because rubber gasket 4 is revolved the in-process that closes for the both ends of centralizer base member 1 at locking ring 2 and is compressed deformation gradually, make rubber gasket 4's atress deformation step by step, thereby can make rubber gasket 4's deformation more even, help improving rubber gasket 4 and the homogeneity and the leakproofness of the interference pressure between the part of being right, and then help improving the stability and the reliability of centralizer 100 installation.

Preferably, as shown in fig. 2, the rubber gasket 4 may include an annular gasket body including an embedding portion 41 for embedding both ends of the central passage 11 and an abutting portion 42 coaxially connected to the embedding portion 41, the abutting portion 42 abutting between end faces of both ends of the centralizer base body 1 and the locking ring 2. Through this setting, embedding portion 41 can be convenient for the connection at the both ends of rubber gasket 4 and centralizer base member 1, and butt portion 42 butt takes place to deform under the effect of the locking power of receiving locking ring 2 between the terminal surface and the locking ring 2 at the both ends of centralizer base member 1 for rubber gasket 4.

Further, a step 21 for abutting against the abutting portion 42 may be formed in the securing ring 2, and the abutting portion 42 abuts between the step 21 and the end faces of both ends of the centralizer base body 1. The provision of the step 21 serves to effect compression of the abutment 42.

Further, an external thread is formed on the outer peripheral wall of both ends of the centralizer base body 1, and an internal thread matching the external thread is formed on the inner wall of the locking ring 2 between the end adjacent to the centralizer base body 1 and the step 21. The inner thread is arranged on the inner wall of the locking ring 2 between one end close to the centralizer base body 1 and the step 21, and is used for limiting the stroke range of the locking ring 2 relative to the rubber gasket 4 so as to limit the extrusion degree of the locking ring 2 to the rubber gasket.

In another preferred embodiment, two locking rings 2 can be respectively engaged with both ends of the centralizer base 1. The clamping mode enables the rubber gaskets 4 to be compressed and deformed once to be in contact with the part to be centered when the locking ring 2 is connected to the two ends of the centralizer base body 1, and the improvement of installation efficiency is facilitated.

In the embodiment shown in fig. 2, both ends of the central channel 11 of the centralizer base 1 have a bevel groove 13, both bevel grooves 13 having an inner diameter width tapering towards each other. The provision of the bezel groove 13 facilitates smooth fitting of the fitting portion 41 of the rubber gasket 4.

In the embodiment shown in fig. 3, the outer circumferential wall of the centralizer base 1 may be formed with a groove 12 for fixedly supporting the rib 3.

Preferably, the supporting rib 3 may be made of a rubber material, and the supporting rib 3 may be vulcanised into the recess 12.

It is also preferable that four support ribs 3 are uniformly arranged on the outer peripheral wall of the centralizer base 1 as shown in fig. 1, and the head end 31 and the tail end 32 of each support rib 3 are formed in a sharp angle shape, that is, the support ribs 3 can be designed in a fin shape as shown in fig. 1, so that the influence on the circulation of the slurry fluid can be reduced while ensuring a sufficient centralizing and centering effect.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A centralizer, comprising:

a centralizer base body, wherein a central channel for passing through a part to be centralized is formed on the centralizer base body, a plurality of supporting ribs are formed on the periphery of the centralizer base body at intervals in the circumferential direction,

two locking rings detachably connected to both ends of the centralizer base, respectively, an

Two rubber gaskets respectively positioned between the two ends of the centralizer basal body and the corresponding locking rings,

wherein the rubber gasket is configured to be compressively deformed when the locking ring is coupled to the ends of the centralizer base such that the rubber gasket forms an interference fit with the part being centralized.

2. The centralizer of claim 1, wherein two of the locking rings are each threadedly coupled to either end of the centralizer base, wherein the rubber gasket is configured to be compressively deformed during threading of the locking rings relative to the either end of the centralizer base to provide an interference fit between the rubber gasket and the component being centralized.

3. The centralizer of claim 1 or 2, wherein the rubber gasket comprises an annular gasket body, the annular gasket body comprises an embedding part for embedding both ends of the central channel and an abutting part coaxially connected with the embedding part, and the abutting part abuts between the end faces of both ends of the centralizer base body and the locking ring.

4. The centralizer of claim 3, wherein the locking ring has a step formed therein for abutting against the abutment portion, the abutment portion abutting between the step and end faces of both ends of the centralizer base.

5. The centralizer of claim 4 wherein the outer peripheral wall of each end of the centralizer base is formed with an external thread, and the inner wall of the locking ring between the end of the centralizer base and the step is formed with an internal thread which mates with the external thread.

6. The centralizer of claim 1, wherein the two locking rings are clamped to respective ends of the centralizer base.

7. The centralizer of claim 2 or 6, wherein both ends of the central passage of the centralizer base have a chamfered groove, both of the chamfered grooves having an inner diameter width that tapers towards each other.

8. A centraliser as claimed in claim 2 or 6, wherein the outer circumferential wall of the centraliser body is formed with a recess for securing the supporting rib.

9. The centralizer of claim 8 wherein the support rib is made of a rubber material, the support rib being vulcanised into the recess.

10. A centraliser as claimed in claim 2 or 6, wherein the head end and the tail end of the supporting rib are each formed to be pointed.

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