CN209687431U - Telescopic rigid centralizer - Google Patents
Telescopic rigid centralizer Download PDFInfo
- Publication number
- CN209687431U CN209687431U CN201920291302.7U CN201920291302U CN209687431U CN 209687431 U CN209687431 U CN 209687431U CN 201920291302 U CN201920291302 U CN 201920291302U CN 209687431 U CN209687431 U CN 209687431U
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- block
- cylinder
- wiper block
- sliding
- wiper
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Abstract
The utility model belongs to oil field well field of tool, more particularly to a kind of telescopic rigid centralizer, including cylinder and wiper block, wiper block is mounted on cylinder, it further include sliding block, the oblong openings for accommodating wiper block are provided on the side wall of the cylinder, the length direction of oblong openings and the axis direction of cylinder are consistent, the both ends of oblong openings be each provided with one described in sliding block, the wiper block is located between two sliding blocks, one end of the sliding block is provided with inclined-plane, it is slidably matched on the inclined-plane that the both ends of wiper block are against on two sliding blocks and with inclined-plane, to convert the radial motion of wiper block to the axial movement of sliding block, two sliding blocks remain the movement tendency close to wiper block under the action of the spring.The support force of the utility model uses spring centralizer made of steel disc much larger than existing, while having certain flexibility, has good righting effect, can be described as semi-rigid centralizer.
Description
Technical field
The utility model belongs to oil field well field of tool more particularly to a kind of telescopic rigid centralizer.
Background technique
Indispensable auxiliary tool, casing stabbing board are generally divided into rigid centralizer and bullet when casing stabbing board is oil well cementing
Two kinds of spring centralizer.The characteristics of rigid centralizer be it is big to the support force of casing, righting effect is reliable, but passability is poor, hold
It is also easy to produce card well problem.The characteristics of spring centralizer is that passability is good, but support force is smaller, and righting effect is to be improved.Therefore,
It is big it is necessary to design a kind of support force, and the telescopic rigid centralizer that passability is good.
Summary of the invention
The utility model provides a kind of telescopic rigid centralizer, to solve the problems mentioned in the above background technology.
The technical problem solved by the utility model is implemented by the following technical solutions: the utility model provides one kind
Telescopic rigid centralizer, including cylinder and wiper block, wiper block are mounted on cylinder, further include sliding block, the side of the cylinder
The oblong openings for accommodating wiper block, the length direction of oblong openings and the axis direction one of cylinder are provided on wall
Cause, the both ends of oblong openings be each provided with one described in sliding block, the wiper block is located between two sliding blocks, the cunning
One end of block is provided with inclined-plane, is slidably matched on the inclined-plane that the both ends of wiper block are against on two sliding blocks and with inclined-plane, thus will
The radial motion of wiper block is converted into the axial movement of sliding block, and two sliding blocks remain lean on to wiper block under the action of the spring
Close movement tendency；
The limit plate of an arc is connected on the inside of the wiper block, limit plate is fixed by screws in wiper block
The both ends of inside, limit plate ride over the inside of oblong openings, to prevent wiper block from falling off from cylinder；
The fabrication hole for tightening screw is correspondingly arranged on the screw on the cylinder.
The side of the sliding block is provided with sliding slot, and oblong openings both ends section corresponding with the sliding block is provided with
With the matched guide rail of the sliding slot.The quantity of the wiper block is not less than 3.
The utility model has the following beneficial effects: wiper block radial motion is converted to sliding block by inclined-plane by the utility model
It being axially moved, is based on this structure, the support force of the utility model uses spring centralizer made of steel disc much larger than existing,
There is certain flexibility simultaneously, there is good righting effect, can be described as semi-rigid centralizer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the sectional view in Fig. 1 at B；
Fig. 3 is the sectional view in Fig. 1 at A.
In figure: 1- casing, 2- plug, 3- cylinder, 4- fabrication hole, 5- pressure ring, 6- spring, 7- sliding block, 8- wiper block, 9-
Limit plate, the inclined-plane 10-, 11- guide rail.
Specific embodiment
The utility model is described further below in conjunction with attached drawing:
The present embodiment includes cylinder 3 and wiper block 8, and wiper block 8 is mounted on cylinder 3.The above are in the prior art normal
See structure, details are not described herein.
The innovation of the utility model is: further including sliding block 7, is provided on the side wall of the cylinder 3 for accommodating
The length direction of the oblong openings of wiper block 8, oblong openings is consistent with the axis direction of cylinder 3, and the two of oblong openings
Sliding block 7 described in being each provided with one is held, the wiper block 8 is located between two sliding blocks 7, and one end of the sliding block 7 is arranged
There is an inclined-plane 10, is slidably matched on the inclined-plane 10 that the both ends of wiper block 8 are against on two sliding blocks 7 and with inclined-plane 10, thus by righting
The radial motion of block 8 is converted into the axial movement of sliding block 7, and two sliding blocks 7 are remained under the action of spring 6 to wiper block 8
Close movement tendency.8 radial motion of wiper block is converted to the axial movement of sliding block 7, base by inclined-plane 10 by the utility model
Spring centralizer made of steel disc is used much larger than existing in the support force of this structure, the utility model, while having one
Fixed flexibility, has good righting effect, can be described as semi-rigid centralizer.
The quantity of the wiper block 8 is not less than 3.
When it is implemented, the inclined-plane 10 is less than the angle of friction on inclined-plane with the angle of the axis of cylinder 3, that is, it must assure that and help
Positive block 8 will not occur self-locking on inclined-plane 10.In addition, can by adjusting the tilt angle on inclined-plane 10 or the elasticity modulus of spring 6
The support force of centralizer is adjusted flexibly, to meet the application demand under different operating conditions.
The inside of the wiper block 8 is connected with the limit plate 9 of an arc, and limit plate 9 is fixed by screws in righting
The both ends of the inside of block 8, limit plate 9 ride over the inside of oblong openings, thus prevent wiper block 8 from falling off from cylinder 3, this
The assembly method of kind wiper block 8 keeps the structure of the utility model simpler, assembles more convenient quick.
It is correspondingly arranged on the screw fabrication hole 4 for tightening screw on the cylinder 3, screwdriver is passed through into technique
It hole 4 can be by screw-driving.
The side of the sliding block 7 is provided with sliding slot, oblong openings both ends section setting corresponding with the sliding block 7
Have and the matched guide rail 11 of the sliding slot.Sliding block 7 is mounted on and can guarantee effectively connecting between cylinder 3 and sliding block 7 on guide rail 11
It connects, and guarantees sliding block 7 slidably.It should be noted that guide rail 11 is not provided in the middle part of oblong openings, meanwhile, rectangle is opened
Width in the middle part of mouthful is larger, can be successfully inserted on the guide rail 11 so as to sliding block 7.
Technical solution the most further is provided with pressure ring 5 between the sliding block 7 and spring 6, synchronous convenient for each sliding block
Movement.
In order to guarantee the smooth assembly of spring 6 and pressure ring 5, plug 2, spring 6 and pressure ring 5 can be set in one end of cylinder 3
Be packed at one end from plug 2, and be enclosed in cylinder 3 by plug 2, plug can by welding or other be fixedly connected with mode and connect
It connects on cylinder 3.
When installation, the utility model is covered on casing 1 and is locked by bolt.
Claims (3)
1. a kind of telescopic rigid centralizer, including cylinder (3) and wiper block (8), wiper block (8) are mounted on cylinder (3),
It is characterized in that: further including sliding block (7), the rectangle being provided on the side wall of the cylinder (3) for accommodating wiper block (8) is opened
Mouthful, the length direction of oblong openings is consistent with the axis direction of cylinder (3), and the both ends of oblong openings are each provided with an institute
The sliding block (7) stated, the wiper block (8) are located between two sliding blocks (7), and one end of the sliding block (7) is provided with inclined-plane
(10), it is slidably matched on the inclined-plane (10) that the both ends of wiper block (8) are against on two sliding blocks (7) and with inclined-plane (10), thus will
The radial motion of wiper block (8) is converted into the axial movement of sliding block (7), and two sliding blocks (7) are protected always under the action of spring (6)
Hold the movement tendency close to wiper block (8)；
The limit plate (9) of an arc is connected on the inside of the wiper block (8), limit plate (9), which is fixed by screws in, to be helped
The inside of positive block (8), the both ends of limit plate (9) ride over the inside of oblong openings, to prevent wiper block (8) from cylinder (3)
On fall off；
The fabrication hole (4) for tightening screw is correspondingly arranged on the screw on the cylinder (3).
2. a kind of telescopic rigid centralizer according to claim 1, it is characterised in that: the side of the sliding block (7) is set
It is equipped with sliding slot, oblong openings both ends section corresponding with the sliding block (7) is provided with and the matched guide rail of the sliding slot
(11)。
3. a kind of telescopic rigid centralizer according to claim 1, it is characterised in that: the quantity of the wiper block (8)
Not less than 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291302.7U CN209687431U (en) | 2019-03-08 | 2019-03-08 | Telescopic rigid centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291302.7U CN209687431U (en) | 2019-03-08 | 2019-03-08 | Telescopic rigid centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209687431U true CN209687431U (en) | 2019-11-26 |
Family
ID=68604085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920291302.7U Active CN209687431U (en) | 2019-03-08 | 2019-03-08 | Telescopic rigid centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209687431U (en) |
-
2019
- 2019-03-08 CN CN201920291302.7U patent/CN209687431U/en active Active
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