Low-clearance chain ring type wellhead hoisting and moving device

Abstract

A low-clearance chain ring type wellhead hoisting and moving device belongs to the technical field of petroleum drilling and production equipment and comprises a guide rail and a support body, the support body is hung on the lower portion of the guide rail through a power wheel set and a driven wheel, a driving chain wheel and a guide wheel I are arranged on the left side of the support body, and a hydraulic lifting motor is fixed on the support body. The driving chain wheel is fixed on an output shaft of the hydraulic lifting motor; a guide wheel II, a guide wheel III and a guide wheel IV of which the centers are horizontally arranged in a straight line are arranged on the right side of the bracket body; a chain bucket is fixedly connected to the lower portion of the left side of the support body, a hoisting connector is arranged on the lower portion of the right side of the support body, one end of a chain is fixed to the right side of the support body, the chain sequentially and alternately bypasses the hoisting connector, the guide wheel IV, the guide wheel III and the guide wheel II and then bypasses the guide wheel I and the driving chain wheel, and the other end of the chain vertically downwards enters the chain bucket. Through the combination of the chain wheel and the chain, the lifting height is increased again, the lifting stroke can be increased infinitely, and the problem that the lifting height of the blowout preventer is insufficient is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of petroleum drilling equipment, and in particular relates to a low-clearance chain-ring type wellhead lifting and moving device. Background Art

[0002] Existing oil cylinder type lifting and moving devices all adopt piston rod extension and retraction to lift the blowout preventer equipment through a pulley group and a wire rope system. For example, the utility model patent with patent number CN202221537356.5 discloses an oil cylinder chain ring type wellhead lifting and moving device with four times increased distance, including a support body and a guide rail, the support body is suspended at the lower part of the guide rail through a power wheel group, an oil cylinder is horizontally fixed on the support body, a moving sprocket group I and a moving sprocket group II are horizontally arranged and fixed on the head of the piston rod of the oil cylinder, a fixed sprocket group I and a fixed sprocket group II are horizontally arranged and fixed on one end of the piston rod of the support body close to the oil cylinder, the moving sprocket group I and the fixed sprocket group I are arranged between the moving sprocket group II and the fixed sprocket group II, one end of the chain is fixed to the end of the piston rod of the support body close to the oil cylinder, the chain passes through the moving sprocket group I, the fixed sprocket group I, the moving sprocket group II, and the fixed sprocket group II in turn, and the other end of the chain passes vertically downward through the lifting interface and then vertically upwards and fixedly connected to the support body. Although the patent structure increases the lifting height of the chain by four times, the maximum lifting stroke is limited due to the cylinder stroke limitation. The present application intends to increase the lifting space again based on the existing chain-type lifting device, so this improvement is proposed. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a low-headroom chain-ring type wellhead lifting and moving device. Compared with the original oil cylinder type lifting and moving device and the chain-ring type lifting and moving device, the utility model further lengthens the lifting height through the combination of the sprocket, the chain and the guide wheel, and can increase the lifting stroke infinitely, effectively solving the problem of insufficient lifting height of the blowout preventer.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A low-clearance chain-ring wellhead lifting and moving device comprises a guide rail and a support body, wherein the support body is suspended at the lower part of the guide rail through a power wheel group and a driven wheel, a driving sprocket and a guide wheel I are arranged on the left side of the support body, a hydraulic lifting motor is fixed on the support body, and the driving sprocket is fixed on the output shaft of the hydraulic lifting motor; a guide wheel II, a guide wheel III and a guide wheel IV are arranged in a straight line with a central horizontal line on the right side of the support body; a chain bucket is fixedly connected to the lower left part of the support body, a lifting interface is arranged at the lower right part of the support body, one end of the chain is fixed to the right side of the support body, the chain first bypasses the lifting interface, guide wheel IV, guide wheel III and guide wheel II alternately in turn, and then bypasses the guide wheel I and the driving sprocket, and the other end vertically enters the chain bucket downward.

[0006] In a preferred embodiment of the above technical solution, the guide wheels II, III and IV are arranged in a row with their horizontal centers and are installed on the left side of the bracket body from left to right in sequence; the guide wheels II and IV are installed on the front side of the bracket body; the guide wheel III is installed on the rear side of the bracket body and is located between the guide wheels II and IV; the direction of the chain is from right to left, first passing through the hole on the right side of the lifting interface, bypassing the guide wheel IV, then passing through the hole in the middle of the lifting interface, bypassing the guide wheel III, and finally passing through the hole on the left side of the lifting interface, bypassing the guide wheel II, and then bypassing the guide wheel I and the driving sprocket.

[0007] In a preferred embodiment of the above technical solution, one end of the chain is fixed to the right side of the bracket body through a chain fixer.

[0008] In a preferred embodiment of the above technical solution, the power wheel set and the driven wheel are rollingly adapted to the guide rail and are suspended at the bottom of the guide rail, and the bracket body is integrated with the side plate to which the power wheel set and the driven wheel are fixed.

[0009] In a preferred embodiment of the above technical solution, a travel motor is provided on the power wheel assembly, and the travel motor is connected to the operating box.

[0010] In a preferred embodiment of the above technical solution, the operating box is connected to the hydraulic lifting motor and controls its oil supply.

[0011] The advantages of this utility model compared with the prior art:

[0012] This scheme is improved on the basis of the original cylinder type lifting and moving device and the original chain ring type lifting and moving device. The low-clearance chain ring type wellhead lifting and moving device composed of chains and sprockets, various guide wheels and chain buckets can lengthen the lifting height again compared with the original cylinder type lifting and moving device and the original chain ring type lifting and moving device. As long as the chain is long enough, the lifting stroke can be increased infinitely, and the lifting space is increased again, which effectively solves the problem of insufficient lifting height of the blowout preventer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 Schematic diagram of the A-direction structure. DETAILED DESCRIPTION

[0015] 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.

[0016] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0017] See also Figure 1-2 , describe the embodiments of the present utility model in detail.

[0018] Example: A low clearance chain ring type wellhead lifting and moving device, see Figure 1 , Figure 2 As shown, it includes a guide rail 1 and a bracket body 16, the bracket body 16 is suspended at the lower part of the guide rail 1 through a power wheel group 3 and a driven wheel 2, a driving sprocket 9 and a guide wheel I5 are provided on the left side of the bracket body 16, a hydraulic lifting motor 11 is fixed on the bracket body 16, and the driving sprocket 9 is fixed on the output shaft of the hydraulic lifting motor 11; a guide wheel II6, a guide wheel III7 and a guide wheel IV8 arranged in a straight line with a central level are provided on the right side of the bracket body 16; a chain bucket 14 is fixedly connected to the lower left side of the bracket body 16, a lifting interface 13 is provided at the lower right side of the bracket body 16, one end of the chain 10 is fixed on the right side of the bracket body 16, and the chain 10 first bypasses the lifting interface 13, the guide wheel IV8, the guide wheel III7 and the guide wheel II6 alternately in turn, and then bypasses the guide wheel I5 and the driving sprocket 9, and the other end vertically enters the chain bucket 14 downward.

[0019] In this embodiment, the low-clearance chain-ring type wellhead lifting and moving device composed of chains and sprockets, guide wheels and chain buckets can lengthen the lifting height again compared with the original cylinder type lifting and moving device and the original chain-ring type lifting and moving device. As long as the chain is long enough, the lifting stroke can be increased infinitely, and the lifting space is increased again, which effectively solves the problem of insufficient lifting height of the blowout preventer.

[0020] In a specific embodiment, the guide wheels II6, III7 and IV8 are arranged in a row horizontally and are installed in sequence from left to right on the left side of the bracket body 16. The guide wheels II6 and IV8 are installed on the front side of the bracket body 16, and the guide wheel III7 is installed on the rear side of the bracket body 16 and is located between the guide wheels II6 and IV8. The direction of the chain 10 is from right to left, first passing through the hole on the right side of the lifting interface 13, bypassing the guide wheel IV8, then passing through the hole in the middle of the lifting interface 13, bypassing the guide wheel III7, and finally passing through the hole on the left side of the lifting interface 13, bypassing the guide wheel II6, and then bypassing the guide wheel I5 and the driving sprocket 9.

[0021] Through the above structure, a sprocket, a chain and a guide wheel structure are used to drive the lifting interface, and the lifting interface is supported by a plurality of guide wheels arranged side by side, so that the lifting stability can be ensured.

[0022] In a specific embodiment, one end of the chain 10 is fixed to the right side of the bracket body 16 through a chain fixer 12, which has a simple structure and is easy to use.

[0023] In a specific embodiment, the power wheel set 3 and the driven wheel 2 are rollingly adapted to the guide rail 1 and suspended at the lower part of the guide rail 1, and the bracket body 16 is integrated with the side plate to which the power wheel set 3 and the driven wheel 2 are fixed.

[0024] Through the above structure, the horizontal movement of the lifting can be guaranteed, and the automatic horizontal movement can be achieved through the power wheel set.

[0025] In a specific embodiment, the power wheel set 3 is provided with a travel motor 4, and the travel motor 4 is connected to an operation box 15. The operation box 15 is connected to the hydraulic lifting motor 11 and controls the oil supply thereof.

[0026] During operation, the hydraulic station supplies oil to the operating box 15, and the operating box 15 can control the travel motor 4 to supply oil so that it drives the power wheel group 3 to realize the movement of the lifting device. The operating box 15 can control the hydraulic lifting motor 11 to drive the sprocket 9 to rotate, drive the chain 10 to move, and rotate the guide wheel I5, guide wheel II6, guide wheel III7 and guide wheel IV8, thereby driving the lifting interface 13 to move up and down, and the other end of the lifting interface 13 is connected to the blowout preventer to lift or lower the blowout preventer. Through this structure, the lifting height of the chain 10 can be unlimited, as long as the chain is long enough, which solves the problem of insufficient height for lifting the blowout preventer, and at the same time, the lifting space is increased again and more labor-saving.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A low-headroom chain-ring type wellhead lifting and moving device, comprising a guide rail (1) and a bracket body (16), wherein the bracket body (16) is suspended on the lower part of the guide rail (1) through a power wheel group (3) and a driven wheel (2), characterized in that: The left side of the support body (16) is provided with a driving sprocket (9) and a guide wheel I (5), a hydraulic lifting motor (11) is fixed on the support body (16), and the driving sprocket (9) is fixed on the output shaft of the hydraulic lifting motor (11); the right side of the support body (16) is provided with a guide wheel II (6), a guide wheel III (7) and a guide wheel IV (8) arranged in a straight line with a central horizontal direction; the lower part of the left side of the support body (16) is fixedly connected to a chain bucket (14), and the lower part of the right side of the support body (16) is provided with a lifting interface (13), one end of the chain (10) is fixed on the right side of the support body (16), and the chain (10) first bypasses the lifting interface (13), the guide wheel IV (8), the guide wheel III (7) and the guide wheel II (6) alternately in sequence, and then bypasses the guide wheel I (5) and the driving sprocket (9), and the other end vertically enters the chain bucket (14) downward.

2. A low clearance chain ring type wellhead lifting and moving device according to claim 1, characterized in that: The guide wheel II (6), guide wheel III (7) and guide wheel IV (8) are arranged in a row horizontally and are installed in sequence from left to right on the left side of the bracket body (16). The guide wheel II (6) and guide wheel IV (8) are installed on the front side of the bracket body (16), and the guide wheel III (7) is installed on the rear side of the bracket body (16) and is located in the middle of the guide wheel II (6) and the guide wheel IV (8). The direction of the chain (10) is: from right to left, first passing through the hole on the right side of the lifting interface (13), bypassing the guide wheel IV (8), then passing through the hole in the middle of the lifting interface (13), bypassing the guide wheel III (7), and finally passing through the hole on the left side of the lifting interface (13), bypassing the guide wheel II (6), and then bypassing the guide wheel I (5) and the driving sprocket (9).

3. The low-headroom chain-ring wellhead lifting and moving device according to claim 1 is characterized in that: One end of the chain (10) is fixed on the right side of the bracket body (16) through a chain fixer (12).

4. The low-headroom chain-ring wellhead lifting and moving device according to claim 1, characterized in that: The power wheel set (3) and the driven wheel (2) are rollingly adapted to the guide rail (1) and are suspended at the lower part of the guide rail (1); the bracket body (16) is integrated with the side plate to which the power wheel set (3) and the driven wheel (2) are fixed.

5. The low-headroom chain-ring wellhead lifting and moving device according to claim 4 is characterized in that: The power wheel group (3) is provided with a travel motor (4), and the travel motor (4) is connected to an operation box (15).

6. A low-headroom chain-ring wellhead lifting and moving device according to claim 5, characterized in that: The operating box (15) is connected to the hydraulic lifting motor (11) and controls the oil supply thereof.

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