Shoulder-changing lifting device for axial flow pump

Abstract

The utility model discloses an axial flow pump shoulder-changing lifting device, which relates to the axial flow pump lifting technology and comprises a shoulder-changing lifting beam component and a suspension rod component, the shoulder-changing lifting beam component comprises a shoulder-changing lifting beam and a lifting hook connected with the bottom of the shoulder-changing lifting beam, and two ends of the shoulder-changing lifting beam are supported on flange parts. The suspension rod assembly comprises at least two suspension rods, suspension rings are arranged at the two ends of each suspension rod, the suspension rings of every two adjacent suspension rods are connected through shackles, the suspension ring at the lower end of the lowest suspension rod is connected with the axial flow pump, and the suspension ring at the lower end of the lowest suspension rod is connected with the axial flow pump. And when the axial flow pump is lifted to the middle height, the lifting ring at the upper end of the suspension rod in the middle is connected with the lifting hook of the shoulder-changing lifting beam assembly, and when the axial flow pump is lifted to the middle height, the lifting ring at the upper end of the suspension rod in the middle is connected with the lifting hook of the shoulder-changing lifting beam assembly. In some specific occasions, when the whole pump cannot be lifted, the shoulder-changing lifting device can be used for lifting the axial flow pump, and convenience is brought to on-site installation and maintenance of the pump.

Description

[Technical field]

[0001] The utility model relates to the technical field of axial flow pumps, in particular to an axial flow pump shoulder-changing lifting device. [Background technology]

[0002] The existing axial flow pump is installed in the wellbore. Referring to the Chinese utility model patent CN 212454966 U, the axial flow pump is installed at the bottom of the wellbore and suspended by a suspension rod. The upper end of the suspension rod is connected to an adjusting rod. A well cover is provided at the upper opening of the wellbore. A cross arm is fixed inside the wellbore below the well cover. The adjusting rod movably passes through the cross arm upward and is connected to an adjusting nut.

[0003] When lifting the axial flow pump, it is lifted as a whole by a crane or a steam crane. When the crane is used for lifting, the suspension rod is hung on the crane hook for lifting, and the length of the suspension rod is long, which makes the spacing requirements of the crane very high. Some on-site wells are very long, but the height from the crane to the working platform is limited, so the pump cannot be lifted as a whole. It is necessary to use tools such as crowbars to lift the pump. Small pumps may have sufficient load-bearing strength, but large pumps often have insufficient strength, which can easily deform the crowbar and bring safety hazards.

[0004] In an open site, although overall lifting can be achieved, the installation cost will increase (a larger-capacity crane is required). [Utility Model Content]

[0005] The utility model aims to provide an axial flow pump shoulder-changing lifting device, which can realize the overall lifting of the axial flow pump by a crane and ensure safety.

[0006] The utility model adopts the following technical scheme: an axial flow pump shoulder-changing lifting device, the axial flow pump is installed in a wellbore, and a flange portion is provided at the upper end of the wellbore. The axial flow pump shoulder-changing lifting device comprises a shoulder-changing lifting beam assembly and a suspension rod assembly. The shoulder-changing lifting beam assembly comprises a shoulder-changing lifting beam and a hook connected to the shoulder-changing lifting beam. Both ends of the shoulder-changing lifting beam are supported on the flange portion, and the end of the shoulder-changing lifting beam is connected to the flange portion by a detachable fastener. The suspension rod assembly comprises at least two suspension rods, both ends of the suspension rod are provided with lifting rings, and the lifting rings of two adjacent suspension rods are connected by a shackle, the lower end lifting ring of the lowest suspension rod is connected to the axial flow pump, and the upper end lifting ring of the uppermost suspension rod is connected to the hook of the crane. When the axial flow pump is lifted to an intermediate height, the upper end lifting ring of the middle suspension rod is connected to the hook of the shoulder-changing lifting beam assembly.

[0007] Preferably, the shoulder-changing lifting beam comprises two channel steels arranged side by side and a connecting piece for welding and fixing the two channel steels, and the two channel steels are arranged back to back with a spacing space in between.

[0008] Preferably, a row of connecting members are provided on the upper side and the lower side of the shoulder-changing lifting beam along the length direction, and the connecting members are distributed at intervals along the length direction of the shoulder-changing lifting beam.

[0009] Preferably, the connecting member is a rectangular steel plate.

[0010] Preferably, the detachable fastener is a fixing bolt, and the fixing bolt passes through the spacing space.

[0011] Preferably, the upper and lower sides of the shoulder-changing lifting beam are provided with fixing plates welded to the channel steel at positions corresponding to the fixing bolts, and the fixing plates are provided with fixing holes connected to the fixing bolts.

[0012] Preferably, the hook is fixed to the connecting piece by welding.

[0013] Preferably, the hook is connected to a connecting piece on the lower side of the middle portion of the shoulder-changing lifting beam.

[0014] Preferably, the shoulder-changing lifting beam is arranged offset from the center of the wellbore.

[0015] The utility model adopts a shoulder-changing lifting device to lift the axial flow pump. Before lifting, the upper end ring of the uppermost suspension rod is connected with the hook of the crane. When it is lifted to a certain height, the upper end ring of the uppermost suspension rod is close to the height of the crane and cannot be lifted further. At this time, the shoulder-changing lifting device is used to connect the upper end ring of a suspension rod in the middle position with the hook, and then the suspension rod above the middle suspension rod is disassembled, the hook of the crane goes down and approaches the upper end ring of the middle suspension rod, and then the hook of the crane is connected with the upper end ring of the middle suspension rod; finally, the hook of the crane goes up to lift the axial flow pump to the working platform, thereby realizing shoulder-changing lifting.

[0016] In addition, the end of the shoulder-changing lifting beam is connected to the flange through a detachable fastener to avoid displacement during the lifting process and ensure lifting safety. The detachable fasteners are used to facilitate disassembly of the shoulder-changing lifting beam assembly after lifting.

[0017] The adopted shoulder-changing lifting beam assembly has a simple overall structure and low manufacturing cost.

[0018] Compared with the use of crude tools such as crowbars for shoulder-changing lifting, the shoulder-changing lifting beam assembly is specially designed with safety redundancy and sufficient load-bearing strength to withstand the weight of the axial flow pump, ensuring the safety of the lifting process.

[0019] Therefore, in some specific occasions, when the pump cannot be lifted as a whole, the shoulder-changing lifting device of the utility model can be used to lift the axial flow pump, which brings convenience to the on-site installation and maintenance of the lifting pump.

[0020] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings.

Brief Description of the Drawings

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the structure after the shoulder-changing lifting beam assembly is installed on the flange part at the upper end of the wellbore;

[0023] Figure 2 It is a top view of the shoulder-changing lifting beam assembly after it is installed on the flange at the upper end of the wellbore;

[0024] Figure 3 is a top view of the shoulder-changing lifting beam assembly;

[0025] Figure 4 It is the front view of the shoulder-changing lifting beam assembly;

[0026] Figure 5 is a side view of the shoulder-changing lifting beam assembly;

[0027] Figure 6 This is a structural diagram of the crane before it is ready to lift the axial flow pump by changing shoulders;

[0028] Figure 7 It is a structural diagram of the crane lifting the axial flow pump in the process of shoulder change;

[0029] In the figure: wellbore 100, axial flow pump mounting portion 101, flange portion 102, wellbore 200, shoulder-changing lifting beam assembly 1, shoulder-changing lifting beam 11, connecting piece 12, fixing plate 13, fixing bolt 14, hook 15, suspension rod assembly 2, suspension rod 21, shackle 22, and crane 3. [Specific implementation method]

[0030] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0031] Those skilled in the art will appreciate that, in the absence of conflict, the features in the following embodiments and implementations may be combined with each other.

[0032] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For example, the following words indicating orientation or positional relationship, such as "upper", "lower", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] like Figures 1 to 7 As shown, the utility model provides an axial flow pump shoulder-changing lifting device, wherein the axial flow pump 200 is installed in a wellbore 100, an axial flow pump mounting portion 101 is provided at the bottom of the wellbore, the axial flow pump is mounted on the axial flow pump mounting portion 101, and a flange portion 102 is provided at the upper end of the wellbore. The axial flow pump shoulder-changing lifting device lifts the axial flow pump by shoulder-changing lifting, and the axial flow pump shoulder-changing lifting device comprises a shoulder-changing lifting beam assembly 1 and a suspension rod assembly 2, the shoulder-changing lifting beam assembly 1 comprises a shoulder-changing lifting beam 11 and a hook 15 connected to the bottom of the shoulder-changing lifting beam, both ends of the shoulder-changing lifting beam 11 are supported on the flange portion 102, and the end of the shoulder-changing lifting beam 11 is connected to the flange portion 102 by a detachable fastener.

[0035] Among them, the suspension rod assembly 2 is an existing structure, and the suspension rod assembly 2 includes at least two suspension rods 21, and the two ends of the suspension rods are provided with lifting rings, and the lifting rings of two adjacent suspension rods are connected by a shackle 22. The lower end lifting ring of the lowest suspension rod is connected to the axial flow pump, and the upper end lifting ring of the uppermost suspension rod is connected to the hook of the crane. When the axial flow pump is lifted to an intermediate height, the upper end lifting ring of the middle suspension rod is connected to the hook of the shoulder-changing lifting beam assembly. Since the number of suspension rods 21 constituting the suspension rod assembly 2 is uncertain, the middle suspension rod here does not refer to a specific one, but when the axial flow pump is lifted to an intermediate height, it can be connected to the hook of the shoulder-changing lifting beam assembly, and subsequently connected to the hook of the crane, so as to complete the final lifting suspension rod.

[0036] The utility model adopts a shoulder-changing lifting device to lift the axial flow pump, such as Figure 6 As shown, before lifting, the upper end ring of the uppermost suspension rod is connected to the hook of the traveling crane 3. When the lifting reaches a certain height, the upper end ring of the uppermost suspension rod is close to the height of the traveling crane and cannot be lifted further; Figure 7 As shown, at this time, the shoulder-changing lifting beam assembly 1 is installed, and the upper end ring of a suspension rod in the middle position is connected to the hook by using the shoulder-changing lifting device, and then the suspension rod above the middle suspension rod is removed, the crane hook goes down and approaches the upper end ring of the middle suspension rod, and then the crane hook is connected to the upper end ring of the middle suspension rod; finally, the crane hook goes up to lift the axial flow pump to the working platform, thereby realizing shoulder-changing lifting.

[0037] In addition, the end of the shoulder-changing lifting beam is connected to the flange through a detachable fastener to avoid displacement during the lifting process and ensure lifting safety. The detachable fasteners are used to facilitate disassembly of the shoulder-changing lifting beam assembly after lifting.

[0038] The overall structure of the shoulder-changing lifting beam assembly is simple and the manufacturing cost is low.

[0039] The axial flow pump can be lifted by the above-mentioned shoulder-changing lifting device with a high safety factor. Compared with the shoulder-changing lifting by using tools such as crowbars, the shoulder-changing lifting beam assembly is specially designed with safety redundancy and sufficient bearing strength to bear the weight of the axial flow pump, ensuring the safety of the lifting process.

[0040] Therefore, in some specific occasions, when the pump cannot be lifted as a whole, the shoulder-changing lifting device of the utility model can be used to lift the axial flow pump, which brings convenience to the on-site installation and maintenance of the lifting pump.

[0041] Specifically, the shoulder-changing lifting beam 11 includes two channel steels arranged side by side and a connector 12 for welding and fixing the two channel steels. The two channel steels are arranged back to back, with their openings facing horizontally outward, and a space is provided in the middle. The channel steel is low in cost and easy to obtain. The connector is used to fix the two channel steels together, thereby improving the overall structural strength of the shoulder-changing lifting beam.

[0042] Wherein, a row of connectors 12 are provided on the upper and lower sides of the shoulder-changing lifting beam 11 along the length direction, and the connectors are spaced apart along the length direction of the shoulder-changing lifting beam. Preferably, the connector 12 is a rectangular steel plate. The rectangular steel plate fixes and connects the two channel steels and improves the overall structural strength of the shoulder-changing lifting beam.

[0043] Preferably, the detachable fastener is a fixing bolt 14, and the fixing bolt passes through the spacing space and is connected to the flange portion at the upper end of the wellbore. Of course, the flange portion is provided with a corresponding mounting hole connected to the fixing bolt. The fixing bolt includes a screw, a nut and a washer.

[0044] Among them, the upper and lower sides of the shoulder-changing lifting beam 11 are provided with fixing plates 13 welded with the channel steel at the positions corresponding to the fixing bolts, and the fixing plates 13 are provided with fixing holes connected with the fixing bolts. The fixing plates facilitate the connection with the fixing bolts, and together with the connecting plates, they connect the two channel steels, thereby improving the overall structural strength of the shoulder-changing lifting beam.

[0045] The hook 15 is welded and fixed to the connecting piece 12. Connecting pieces are usually arranged in the middle and on both sides of the shoulder-changing lifting beam, and the hook is arranged in the middle of the shoulder-changing lifting beam, that is, welded to the connecting piece on the lower side of the middle part. Compared with the risk of loosening by fixing methods such as bolts, the connection method of the hook 15 and the connecting piece 12 after welding is safer and more reliable.

[0046] Since the middle span of the shaft is large, the specifications and strength of the shoulder-changing lifting beam will also increase if it is placed in the middle of the shaft. Therefore, the shoulder-changing lifting beam is set away from the center of the shaft. In this way, compared with setting it in the center of the shaft, the length of the shoulder-changing lifting beam can be shortened, and the manufacturing cost can be reduced accordingly while ensuring that the lifting can be carried out.

[0047] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. An axial flow pump shoulder-changing lifting device, the axial flow pump is installed in a wellbore, and a flange is provided at the upper end of the wellbore, characterized in that: The axial flow pump shoulder-changing lifting device includes a shoulder-changing lifting beam assembly and a suspension rod assembly. The shoulder-changing lifting beam assembly includes a shoulder-changing lifting beam and a hook connected to the shoulder-changing lifting beam. Both ends of the shoulder-changing lifting beam are supported on a flange portion, and the end of the shoulder-changing lifting beam is connected to the flange portion by a detachable fastener. The suspension rod assembly includes at least two suspension rods. Both ends of the suspension rod are provided with lifting rings. The lifting rings of two adjacent suspension rods are connected by a shackle. The lower end lifting ring of the lowest suspension rod is connected to the axial flow pump, and the upper end lifting ring of the uppermost suspension rod is connected to the hook of the crane. When the axial flow pump is lifted to an intermediate height, the upper end lifting ring of the middle suspension rod is connected to the hook of the shoulder-changing lifting beam assembly.

2. According to claim 1, an axial flow pump shoulder-changing lifting device is characterized in that: The shoulder-changing lifting beam comprises two channel steels arranged side by side and a connecting piece for welding and fixing the two channel steels. The two channel steels are arranged back to back with a spacing space in between.

3. According to claim 2, an axial flow pump shoulder-changing lifting device is characterized in that: A row of connecting pieces are arranged on the upper side and the lower side of the shoulder-changing lifting beam along the length direction, and the connecting pieces are distributed at intervals along the length direction of the shoulder-changing lifting beam.

4. The axial flow pump shoulder-changing lifting device according to claim 3, characterized in that: The connecting piece is a rectangular steel plate.

5. The axial flow pump shoulder-changing lifting device according to claim 2, characterized in that: The detachable fastener is a fixing bolt, and the fixing bolt passes through the spacing space.

6. The axial flow pump shoulder-changing lifting device according to claim 5, characterized in that: The upper and lower sides of the shoulder-changing lifting beam are provided with fixing plates welded to the channel steel at positions corresponding to the fixing bolts, and the fixing plates are provided with fixing holes connected to the fixing bolts.

7. The axial flow pump shoulder-changing lifting device according to claim 2, characterized in that: The hook is fixed to the connecting piece by welding.

8. The axial flow pump shoulder-changing lifting device according to claim 7, characterized in that: The hook is connected to a connecting piece at the lower side of the middle part of the shoulder-changing lifting beam.

9. The axial flow pump shoulder-changing lifting device according to claim 1, characterized in that: The shoulder-changing lifting beam is arranged away from the center of the wellbore.

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