Hydraulic anchor

Abstract

The utility model belongs to the technical field of petroleum drilling and production equipment, and particularly relates to a hydraulic anchor which comprises an anchor body, a plurality of circular cavities are formed in the anchor body in the circumferential direction of the anchor body, piston cylinders are fixedly connected to the circular cavities of the anchor body, and telescopic anchor fluke structures are slidably connected to the inner sides of the piston cylinders. The anchor fluke structure comprises a piston column slidably connected to the inner wall of the piston cylinder and a supporting block detachably matched with one side of the piston column, friction teeth are evenly distributed on the supporting block, a positioning platform is integrally formed on one side of the piston column, a positioning rod is fixedly connected to one side of the supporting block, and the friction teeth are arranged on the supporting block. The positioning rod extends into a locking groove in the center of the positioning platform. According to the hydraulic anchor, the detachable anchor fluke structure is arranged on the hydraulic anchor, when the anchor fluke structure is abraded, a part of the anchor fluke structure can be detached and replaced, on one hand, material cost is saved, and on the other hand, detachment and replacement are convenient and fast, and the hydraulic anchor is suitable for petroleum drilling and production equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling equipment, in particular to a hydraulic anchor. Background Art

[0002] Oil is a very important geological survey object. With the development of technology, the amount of oil produced is increasing. The most famous oil field in my country is Daqing Oilfield. Common oil is a black viscous substance. After a series of processing, oil can become gasoline. It is a very important secondary energy source. Hydraulic anchors are used in the process of oil extraction. The hydraulic anchor uses the pressure of the oil in the oil pipe to trigger the gripper to prevent the oil pipe from shaking, so as not to affect the extraction.

[0003] When the hydraulic anchor is actually used, the casing is fixed by the anchor claw, and the wear strength between the anchor claw and the casing is high, which can easily cause wear to the anchor claw structure. After wear, the bite ability of the anchor claw will be reduced, which can easily cause unstable bite and shaking, and even worse, the anchor will come off. However, the anchor claws of hydraulic anchors at this stage are generally fixed on the inner column of the anchor body in an integrated manner, which is not convenient to replace. When the anchor claws are worn, they cannot be removed and replaced. There are certain disadvantages and shortcomings, and therefore, improvements are needed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides a hydraulic anchor, which solves the problem that the anchor claw cannot be removed or replaced after being worn.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0008] A hydraulic anchor comprises an anchor body, wherein the anchor body is provided with a plurality of circular cavities along the circumferential direction of the anchor body, a piston cylinder is fixedly connected to the circular cavities of the anchor body, and a retractable anchor claw structure is slidably connected to the inner side of the piston cylinder, the anchor claw structure comprises a piston column slidably connected to the inner wall of the piston cylinder, and a support block detachably adapted to one side of the piston column, the support block is provided with evenly distributed friction teeth, a positioning platform is integrally formed on one side of the piston column, a positioning rod is fixed to one side of the support block, and the positioning rod extends into a locking groove at the center of the positioning platform.

[0009] Furthermore, the positioning platform is provided with an array of track grooves, and the track grooves of the positioning platform are all provided with locking components, which include a sliding block slidably connected to the track groove, and a round rod and a locking rod fixedly connected to the sliding block, wherein the locking rod extends into the locking groove to realize the locking positioning of the positioning rod.

[0010] Furthermore, an annular positioning groove is provided at the positioning rod corresponding to the locking rod, and the locking rod is closed at the annular positioning groove of the positioning rod.

[0011] Furthermore, a rotating ring is rotatably connected to the positioning platform, and an array of arc grooves are provided on the rotating ring, and the round rod is adapted to fit in the corresponding arc grooves.

[0012] Furthermore, anti-slip protrusions are arranged on the outer wall of the rotating ring.

[0013] Furthermore, a connector is provided at the end of the anchor body.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a hydraulic anchor with the following beneficial effects:

[0016] The utility model adopts a split design of the anchor claw structure, which includes two parts, a piston column and a support block, wherein the support block is detachably assembled on the piston column, and a friction tooth is arranged on one side of the support block. When the friction tooth on the support block is worn, the support block can be disassembled and assembled through the matching relationship between the rotating ring and the locking component, and the corresponding parts can be replaced. On the one hand, it can save costs without replacing the entire anchor claw structure. On the other hand, it is convenient to disassemble and assemble, and the parts can be quickly disassembled and assembled. It is easy to use and is conducive to practical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is a structural schematic diagram of the anchor claw structure in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the locking component in the utility model.

[0020] In the figure: 1. anchor body; 2. piston cylinder; 3. anchor claw structure; 301. piston column; 302. positioning platform; 303. track groove; 304. rotating ring; 305. arc groove; 306. positioning rod; 307. support block; 308. friction tooth; 309. annular positioning groove; 3010. anti-slip protrusion; 3011. locking component; 3012. locking groove; 3013. sliding block; 3014. round rod; 3015. locking rod; 4. connector. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, a hydraulic anchor proposed in one embodiment of the utility model comprises an anchor body 1, wherein the anchor body 1 is provided with a plurality of circular cavities along the circumferential direction of the anchor body 1, wherein the circular cavities of the anchor body 1 are all fixedly connected with piston cylinders 2, and the inner side of the piston cylinders 2 is all slidably connected with retractable fluke structures 3, wherein the fluke structures 3 can be retracted to achieve the clamping of the outer parts, wherein the fluke structures 3 comprise a piston column 301 slidably connected to the inner wall of the piston cylinder 2, and a support block 307 detachably adapted to one side of the piston column 301, wherein the fluke structures 3 are composed of piston cylinders 2, piston cylinders 2, piston cylinders 2, piston cylinders 2, piston cylinders 2, piston cylinders 2, piston cylinders 2, piston cylinders 2, piston cylinders 3 ... The piston column 301 is composed of two main parts, namely a column 301 and a support block 307. The support block 307 can be removed and quickly replaced when needed. The support block 307 is provided with evenly distributed friction teeth 308 to increase the bite ability of the support block 307 for external objects. A positioning platform 302 is integrally formed on one side of the piston column 301, and a positioning rod 306 is fixed on one side of the support block 307. The positioning rod 306 extends to the locking groove 3012 at the center of the positioning platform 302 to realize the assembly of the support block 307 on the piston column 301.

[0024] like Figure 2 and Figure 3 As shown, in some embodiments, an array of track grooves 303 are provided on the positioning platform 302, and locking components 3011 are provided at the track grooves 303 of the positioning platform 302, so that the locking components 3011 can be linearly extended and retracted, and the end of the locking component 3011 contacts the positioning rod 306, and then the positioning rod 306 is clamped to achieve the fixation of the support block 307, and the locking component 3011 includes a sliding block 3013 slidably connected to the track groove 303, and a round rod 3014 and a locking rod 3015 fixedly connected to the sliding block 3013, wherein the locking rod 3015 extends into the locking groove 3012 to achieve the locking positioning of the positioning rod 306, thereby achieving the locking of the positioning rod 306.

[0025] like Figure 2 and Figure 3As shown, in some embodiments, an annular positioning groove 309 is provided at the positioning rod 306 corresponding to the locking rod 3015, and the locking rod 3015 is closed at the annular positioning groove 309 of the positioning rod 306. The setting of the annular positioning groove 309 can achieve a limiting effect. When the locking rod 3015 is closed to the annular positioning groove 309, the positioning rod 306 can be locked.

[0026] like Figure 2 and Figure 3 As shown, in some embodiments, a rotating ring 304 is rotatably connected to the positioning platform 302, and an array of arc grooves 305 are provided on the rotating ring 304, and the round rod 3014 is adapted to the corresponding arc groove 305; it should be noted that by rotatably connecting the rotating ring 304 on the positioning platform 302, the angle and position of the arc groove 305 change when the rotating ring 304 rotates, and then the movement of the round rod 3014 and the sliding block 3013 is controlled, thereby realizing the driving effect of the movement of the locking rod 3015, and controlling the locking state of the positioning rod 306 and the support block 307.

[0027] like Figure 2 As shown, in some embodiments, anti-slip protrusions 3010 are provided on the outer wall of the rotating ring 304 to facilitate hand-held operation.

[0028] like Figure 1 As shown, in some embodiments, a connector 4 is provided at the end of the anchor body 1 to achieve connection with the outer components.

[0029] The working principle and use steps of the utility model are as follows: when the support block 307 needs to be replaced, the rotating ring 304 is rotated, and the position and angle of the arc groove 305 on the rotating ring 304 are changed. Since the round rod 3014 is adapted to the corresponding arc groove 305, the sliding block 3013 slides in the corresponding track groove 303, driving the locking rod 3015 to move, and the locking rod 3015 leaves the annular positioning groove 309, and then the positioning rod 306 is removed. When the positioning rod 306 and the support block 307 need to be fixed, the positioning rod 306 is adapted to the locking groove 3012 of the positioning platform 302, and the rotating ring 304 is rotated in the opposite direction so that the locking rod 3015 extends to the annular positioning groove 309 of the positioning rod 306, and the support block 307 can be assembled and fixed.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hydraulic anchor, comprising an anchor body (1), wherein the anchor body (1) is provided with a plurality of circular cavities along the circumferential direction of the anchor body (1), characterized in that: The circular cavity of the anchor body (1) is fixedly connected to a piston cylinder (2), and the inner side of the piston cylinder (2) is slidably connected to a retractable anchor claw structure (3), the anchor claw structure (3) comprises a piston column (301) slidably connected to the inner wall of the piston cylinder (2), and a support block (307) detachably adapted to one side of the piston column (301), the support block (307) is provided with uniformly distributed friction teeth (308), one side of the piston column (301) is integrally formed with a positioning platform (302), one side of the support block (307) is fixed with a positioning rod (306), and the positioning rod (306) extends into a locking groove (3012) at the center of the positioning platform (302).

2. A hydraulic anchor according to claim 1, characterized in that: The positioning platform (302) is provided with an array of track grooves (303), and the track grooves (303) of the positioning platform (302) are all provided with locking components (3011), the locking components (3011) include a sliding block (3013) slidably connected to the track groove (303), and a round rod (3014) and a locking rod (3015) fixedly connected to the sliding block (3013), wherein the locking rod (3015) extends into the locking groove (3012) to realize the locking positioning of the positioning rod (306).

3. A hydraulic anchor according to claim 2, characterized in that: An annular positioning groove (309) is provided on the positioning rod (306) corresponding to the locking rod (3015), and the locking rod (3015) is closed at the annular positioning groove (309) of the positioning rod (306).

4. A hydraulic anchor according to claim 3, characterized in that: The positioning platform (302) is rotatably connected to a rotating ring (304), and the rotating ring (304) is provided with arc grooves (305) distributed in an array, and the round rod (3014) is adapted to fit in the corresponding arc grooves (305).

5. A hydraulic anchor according to claim 4, characterized in that: An anti-slip protrusion (3010) is provided on the outer wall of the rotating ring (304).

6. A hydraulic anchor according to claim 1, characterized in that: A connecting head (4) is provided at the end of the anchor body (1).

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