Integral elastic centralizer

Abstract

The utility model discloses an integral type elastic centralizer, which relates to the technical field of elastic centralizers and comprises two first arc-shaped supporting plates and two second arc-shaped supporting plates, a plurality of centralizing strips are arranged between the two first arc-shaped supporting plates and between the two second arc-shaped supporting plates, and the centralizing strips are connected with the first arc-shaped supporting plates and the second arc-shaped supporting plates. T-shaped blocks are fixedly connected to the two ends of the two first arc-shaped supporting plates correspondingly, T-shaped grooves are formed in the two ends of the two second arc-shaped supporting plates correspondingly, the two T-shaped blocks are inserted into the corresponding T-shaped grooves correspondingly, and fixing mechanisms are arranged between the two first arc-shaped supporting plates and the corresponding second arc-shaped supporting plates correspondingly. The two first arc-shaped supporting plates and the two second arc-shaped supporting plates are placed on the two sides of the pipeline respectively, then the T-shaped blocks are inserted into the corresponding T-shaped grooves respectively, and therefore the device does not need to be arranged from one end of the pipeline in a sleeved mode, and installation of workers is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of elastic centralizers, in particular to an integral elastic centralizer. Background Art

[0002] Centralizers are used in oil and gas fields to keep the casing centered in the wellbore when the casing is lowered, so as to improve the cementing quality. Centralizers are divided into elastic centralizers and rigid centralizers. The elastic centralizer's centralizing strip is elastic and is more suitable for oil and gas fields with large changes in well diameter.

[0003] Among them, the publication number CN203066894U is an integral elastic centralizer, comprising two end tubes of the same diameter and a plurality of elastic centralizer bars connected between the two end tubes, and the two end tubes and all the elastic centralizer bars are an integrated structure. Preferably, the integral elastic centralizer is a tubular elastic steel tube formed by bending and welding elastic steel plates, a plurality of hollow grooves coaxial with the tubular elastic steel tube are evenly arranged in the middle of the tubular elastic steel tube, an elastic centralizer bar is formed between two adjacent hollow grooves, the middle of the elastic centralizer bar is outwardly convex in an arc shape, and the two ends of the tubular elastic steel tube are respectively two end tubes.

[0004] However, the existing integral elastic centralizer is usually sleeved on the oil pipeline during installation and then fixed. If each section of the oil pipeline has been assembled, it is inconvenient to insert the elastic centralizer from one end of the pipeline, which affects the installation of the elastic centralizer. Utility Model Content

[0005] In view of the above problems existing in the existing integral elastic centralizer, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide an integral elastic centralizer, which solves the problem that the existing integral elastic centralizer is usually sleeved on the oil pipeline during installation and then fixed. If each section of the oil pipeline has been assembled at this time, it is inconvenient to insert the elastic centralizer from one end of the pipeline, thereby affecting the installation of the elastic centralizer.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An integral elastic straightener comprises two first arc-shaped support plates and two second arc-shaped support plates, a plurality of straightening bars are arranged between the two first arc-shaped support plates and between the two second arc-shaped support plates, both ends of the two first arc-shaped support plates are fixedly connected with T-shaped blocks, both ends of the two second arc-shaped support plates are provided with T-shaped grooves, the two T-shaped blocks are respectively inserted into the corresponding T-shaped grooves, and a fixing mechanism is arranged between the two first arc-shaped support plates and the corresponding second arc-shaped support plates.

[0009] Preferably, the fixing mechanism includes multiple arc-shaped fixing plates, multiple screw rods, multiple sleeves and multiple knobs, the two screw rods are respectively rotatably connected to the inner walls of the two first arc-shaped support plates and the two second arc-shaped support plates, each sleeve is respectively threadedly sleeved on the rod wall of the corresponding screw rod, each arc-shaped fixing plate is respectively fixedly connected to one end of the corresponding sleeve, and one end of each screw rod away from the sleeve passes through the inner wall of the corresponding first arc-shaped support plate or the second arc-shaped support plate and is respectively fixedly connected to the corresponding knob.

[0010] Preferably, two telescopic rods are fixedly connected between the two first arc-shaped support plates and the two second arc-shaped support plates and the corresponding arc-shaped fixing plates.

[0011] Preferably, the two first arc-shaped support plates and the two second arc-shaped support plates are integrally cast with each corresponding straightening bar.

[0012] Preferably, circular grooves are formed on the outer sides of the two first arc-shaped support plates and the two second arc-shaped support plates, and the two circular grooves match the corresponding knobs respectively.

[0013] Preferably, a hexagonal groove is formed on the surface of each of the knobs.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. The utility model places two first arc-shaped support plates and two second arc-shaped support plates on both sides of the pipeline respectively, and then inserts each T-shaped block into the corresponding T-shaped groove respectively, so that the device does not need to be inserted from one end of the pipeline, so as to facilitate installation by the staff.

[0016] 2. In the utility model, by rotating each knob, each sleeve can then drive the corresponding arc-shaped fixing plate to move, and then the corresponding two arc-shaped fixing plates can respectively clamp the side walls of the pipeline, so that the device can be fixed on the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 For the utility model Figure 1A side cross-sectional view of

[0020] Figure 3 For the utility model Figure 1 A magnified schematic diagram of part A.

[0021] Description of reference numerals:

[0022] 1. First arc-shaped support plate; 2. Second arc-shaped support plate; 3. Straightening bar; 4. Arc-shaped fixing plate; 5. Screw rod; 6. Sleeve; 7. Knob; 8. T-shaped block; 9. Telescopic rod. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] The utility model embodiment discloses an integral elastic centralizer.

[0025] The utility model provides Figure 1-3 An integral elastic straightener shown includes two first arc-shaped support plates 1 and two second arc-shaped support plates 2, a plurality of straightening bars 3 are arranged between the two first arc-shaped support plates 1 and between the two second arc-shaped support plates 2, both ends of the two first arc-shaped support plates 1 are fixedly connected with T-shaped blocks 8, both ends of the two second arc-shaped support plates 2 are provided with T-shaped grooves, the two T-shaped blocks 8 are respectively inserted into the corresponding T-shaped grooves, and a fixing mechanism is arranged between the two first arc-shaped support plates 1 and the corresponding second arc-shaped support plates 2.

[0026] First, two first arc-shaped support plates 1 and two second arc-shaped support plates 2 are placed on both sides of the pipeline respectively, and then each T-shaped block 8 is inserted into the corresponding T-shaped groove, so that the device does not need to be inserted from one end of the pipeline, and then the device can be fixed outside the pipeline through a fixing mechanism.

[0027] In order to fix the device outside the pipeline, Figure 1-3 As shown, the fixing mechanism includes a plurality of arc-shaped fixing plates 4, a plurality of screw rods 5, a plurality of sleeves 6 and a plurality of knobs 7. The two screw rods 5 are rotatably connected to the inner walls of the two first arc-shaped support plates 1 and the two second arc-shaped support plates 2, respectively. Each sleeve 6 is threadedly sleeved on the rod wall of the corresponding screw rod 5, and each arc-shaped fixing plate 4 is fixedly connected to one end of the corresponding sleeve 6. The end of each screw rod 5 away from the sleeve 6 passes through the inner wall of the corresponding first arc-shaped support plate 1 or the second arc-shaped support plate 2 and is fixedly connected to the corresponding knob 7, respectively. A hexagonal groove is provided on the surface of each knob 7, and a circular groove is provided on the outer side of the two first arc-shaped support plates 1 and the two second arc-shaped support plates 2, respectively. The two circular grooves match the corresponding knobs 7.

[0028] Each knob 7 can be rotated by using an Allen wrench, and then each sleeve 6 can drive the corresponding arc-shaped fixing plate 4 to move, and then the corresponding two arc-shaped fixing plates 4 can clamp the side walls of the pipeline respectively, so that the device can be fixed on the pipeline.

[0029] In order to prevent each arc-shaped fixing plate 4 from rotating, Figure 2 As shown, two telescopic rods 9 are fixedly connected between the two first arc-shaped support plates 1 and the two second arc-shaped support plates 2 and the corresponding arc-shaped fixing plates 4 .

[0030] Each telescopic rod 9 can play a role of limiting, preventing each arc-shaped fixing plate 4 from rotating following the rotation of the corresponding screw rod 5 .

[0031] Finally, in order to improve the integrity of the device, Figure 1-2 As shown, the two first arc-shaped support plates 1 and the two second arc-shaped support plates 2 are integrally cast with each corresponding straightening bar 3 .

[0032] Generally, the straightening bar 3 is fixed on the straightening device by welding, so the connection is easy to break and the integrity is poor. However, the device is made of one-piece casting, so the integrity is stronger.

[0033] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An integral elastic centralizer, comprising two first arc-shaped support plates (1) and two second arc-shaped support plates (2), characterized in that: A plurality of straightening bars (3) are provided between the two first arc-shaped support plates (1) and between the two second arc-shaped support plates (2); both ends of the two first arc-shaped support plates (1) are fixedly connected with T-shaped blocks (8); both ends of the two second arc-shaped support plates (2) are provided with T-shaped grooves; the two T-shaped blocks (8) are respectively inserted into the inside of the corresponding T-shaped grooves; and a fixing mechanism is provided between the two first arc-shaped support plates (1) and the corresponding second arc-shaped support plates (2).

2. The integrated elastic centralizer according to claim 1, characterized in that: The fixing mechanism comprises a plurality of arc-shaped fixing plates (4), a plurality of screw rods (5), a plurality of sleeves (6) and a plurality of knobs (7); the two screw rods (5) are respectively rotatably connected to the inner walls of the two first arc-shaped support plates (1) and the two second arc-shaped support plates (2); each sleeve (6) is respectively threadedly sleeved on the rod wall of the corresponding screw rod (5); each arc-shaped fixing plate (4) is respectively fixedly connected to one end of the corresponding sleeve (6); and one end of each screw rod (5) away from the sleeve (6) respectively penetrates the inner wall of the corresponding first arc-shaped support plate (1) or the second arc-shaped support plate (2) and is respectively fixedly connected to the corresponding knob (7).

3. The integrated elastic centralizer according to claim 1, characterized in that: Two telescopic rods (9) are fixedly connected between the two first arc-shaped support plates (1) and the two second arc-shaped support plates (2) and the corresponding arc-shaped fixing plates (4).

4. The integrated elastic centralizer according to claim 1, characterized in that: The two first arc-shaped support plates (1) and the two second arc-shaped support plates (2) are integrally cast with each corresponding straightening bar (3).

5. The integrated elastic centralizer according to claim 1, characterized in that: Circular grooves are provided on the outer sides of the two first arc-shaped support plates (1) and the two second arc-shaped support plates (2), and the two circular grooves are matched with corresponding knobs (7) respectively.

6. The integrated elastic centralizer according to claim 2, characterized in that: A hexagonal groove is formed on the surface of each of the knobs (7).

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