Lift pump frame for overhauling LNG immersed pump

Abstract

The utility model relates to the technical field of LNG (liquefied natural gas) pump overhaul and maintenance, and particularly discloses a suspended pump frame for overhauling an LNG immersed pump, which comprises a support provided with an installation cavity, a top cover installed on the support and provided with an accommodating cavity, and a support hanger hinged and matched with the top cover and arranged in the accommodating cavity in a foldable manner, and the accommodating cavity is communicated with the mounting cavity and is positioned above the mounting cavity. Compared with the prior art, the pump pool flange cover is not required to be separated from the pump and the pump pool by using large hoisting equipment; the overhaul and maintenance cost is greatly reduced; and pumps with different lengths can be effectively taken out from the pump pool, the structure is simple, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of LNG pump repair and maintenance technology, and more specifically, to a pump frame for repairing LNG submersible pumps. Background Technology

[0002] In the existing technology, during the pump maintenance and repair of LNG fixed station pump skids, cranes or other lifting methods are required to lift the pumps out of the pump pool before maintenance and repair can be carried out.

[0003] The inspection and maintenance process will increase costs, waste resources, and be time-limited, which is not conducive to the timeliness of equipment inspection and maintenance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a pump frame for overhauling LNG submerged pumps;

[0005] The solution adopted by this utility model to solve the technical problem is:

[0006] A pump frame for overhauling an LNG submerged pump includes a bracket with an installation cavity, a top cover mounted on the bracket and having a receiving cavity, and a support bracket hinged to the top cover and foldable within the receiving cavity; the receiving cavity communicates with the installation cavity and is located above the installation cavity.

[0007] The mounting cavity is used for the installation of the pump sump. The pump is mounted on the pump sump through the pump sump flange cover and one end extends into the pump sump.

[0008] When the pump needs maintenance, the support bracket is perpendicular to the top cover and located above the pump. Then, the support bracket is hooked onto the lifting lugs on the pump pool flange cover. By controlling the support bracket, the pump pool flange cover is moved upward, which in turn moves the pump upward, allowing it to be removed from the pump pool. After removal, maintenance can be carried out.

[0009] After the maintenance is completed, the pump tank flange cover can be re-lifted using the support brackets; after assembly, the support brackets can be folded and stored in the receiving cavity.

[0010] Compared with existing technologies, this application eliminates the need for large hoisting equipment for lifting operations, significantly reducing maintenance costs.

[0011] In some possible implementations, the support frame has a portal frame structure, including a U-shaped support member that is hinged to the top cover, and a lifting device mounted on the U-shaped support member and connected to the pump pool flange cover.

[0012] In some possible implementations, the U-shaped support includes two sets of oppositely arranged support rods that are hinged to the top cover, and a U-shaped frame connected to the two sets of support rods at the end away from their hinge point with the top cover.

[0013] In some possible implementations, the U-shaped support also includes a diagonal brace with one end hinged to the top cover and the other end detachably connected to the support rod.

[0014] In some possible implementations, the U-shaped frame and the support rod slide together along the axis of the support rod, and the U-shaped frame and the support rod are locked together by a locking device.

[0015] In some possible implementations, the U-shaped frame includes connecting rods that correspond one-to-one with the two sets of support rods, and a crossbar connected to the end of the two sets of connecting rods away from the support rods; the lifting device is mounted on the crossbar.

[0016] In some possible implementations, the support rod is fitted onto the outside of the connecting rod.

[0017] In some possible implementations, the lifting device is a manual hoist or an electric hoist.

[0018] In some possible implementations, a skylight is also included, mounted on the top cover, for sealing the receiving cavity.

[0019] In some possible implementations, the skylight includes a support frame mounted on the top cover and located above the receiving cavity, and a window body hinged to the support frame; the support frame has a hollow structure and communicates with the receiving cavity.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] Compared with other technologies, this invention eliminates the need for large hoisting equipment to separate the pump pool flange cover and the pump from the pump pool, thus greatly reducing maintenance costs.

[0022] This utility model, through the sliding cooperation of the U-shaped frame and the support rod, can effectively meet the needs of pumps of different lengths to be taken out of the pump pool. It has a simple structure and strong practicality. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a schematic diagram of the structure of the U-shaped support member housed in the receiving cavity in this utility model;

[0026] Figure 4 This is a schematic diagram illustrating the use of the pump before overhauling and maintaining it using this utility model;

[0027] The components are: 1. Bracket; 11. Mounting cavity; 2. Top cover; 21. Receiving cavity; 3. Support and hanger; 31. U-shaped support; 311. Support rod; 312. U-shaped frame; 32. Lifting device; 4. Skylight; 41. Support frame; 42. Window body; 101. Pump pool; 102. Pump pool flange cover; 103. Pump. Detailed Implementation

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The present invention will now be described in detail.

[0030] like Figures 1-4 As shown:

[0031] A pump frame for overhauling an LNG submerged pump, used to separate the pump 103 from the pump pool 101; comprising a bracket 1 with a mounting cavity 11, a top cover 2 mounted on the bracket 1 and having a receiving cavity 21, and a support bracket 3 hinged to the top cover 2 and foldable within the receiving cavity 21; the receiving cavity 21 communicates with the mounting cavity 11 and is located above the mounting cavity 11; the receiving cavity 21 is hollow.

[0032] The mounting cavity 11 is used for the installation of the pump pool 101. The pump 103 is installed on the pump pool 101 through the pump pool flange cover 102 and one end extends into the pump pool 101.

[0033] The bracket 1 includes a base and four sets of uprights mounted on the base; the top cover 2 is mounted on the uprights, and the three together form an installation cavity 11.

[0034] A ladder is installed on the support 1, allowing maintenance personnel to operate on the top cover 2 via the ladder.

[0035] A ring frame is provided on the top cover 2 and at the bottom of the receiving cavity 21; the bottom of the ring frame is on the same plane as the bottom of the top cover 2; when the support bracket 3 is stored, the support bracket 3 will be supported by the ring frame and located inside the receiving cavity 21.

[0036] When pump 103 needs maintenance, control the support bracket 3 to be perpendicular to the top cover 2 and located above pump 103, so that the lifting point of the support bracket 3 is directly above pump 103. Remove the bolts on the pump pool flange cover 102 used for the connector to the pump pool 101, hook the support bracket 3 to the lifting lug on the pump pool flange cover 102, and control the support bracket 3 to move the pump pool flange cover 102 upward, which will also move the pump 103 upward, so that it can be taken out from the pump pool 101. After it is taken out, it can be inspected and maintained.

[0037] After the maintenance is completed, the pump 103 pump pool flange cover 102 can be hoisted again using the support bracket 3; after assembly, the support bracket 3 can be folded and stored in the receiving cavity 21.

[0038] Compared with existing technologies, this application eliminates the need for large hoisting equipment for lifting operations, significantly reducing maintenance costs.

[0039] In some possible implementations, in order to effectively lift the pump 103 and the pump pool flange cover 102 by means of the support and hanger 3, the support and hanger 3 has a portal-shaped structure, including a U-shaped support 31 that is hinged to the top cover 2, and a lifting device 32 installed on the U-shaped support 31 and connected to the pump pool flange cover 102.

[0040] Specifically, the open end of the U-shaped support 31 is hinged to the top cover 2 and located in the receiving cavity, so that the U-shaped support 31 can be stored in the receiving cavity during use. It can be controlled to be perpendicular to the top cover 2 in the vertical direction only when hoisting is required. The plane on which the top cover 2 is located is a horizontal plane, the vertical direction is the Z-axis direction, and the horizontal plane is the plane on which the X-axis and Y-axis are located.

[0041] After the U-shaped support 31 is set vertically, the lifting device 32 is connected to the lifting lugs set on the pump pool flange cover 102; then the lifting device 32 can control the pump pool flange cover 102 and the pump 103 to move along the Z-axis direction and separate from the pump pool 101, so as to remove the pump 103 from the pump pool 101.

[0042] In some possible implementations, the U-shaped support 31 includes two sets of support rods 311 that are arranged opposite to each other and hinged to the top cover 2, and a U-shaped frame 312 that is connected to the two sets of support rods 311 at the end away from the hinge point with the top cover 2.

[0043] The U-shaped frame 312 is used for the installation of the lifting device 32. Its opening is located on the side close to the support rod 311, so that the U-shaped frame 312 can still form a U-shaped structure after being connected with the two sets of support rods 311. During lifting, the opening of the U-shaped structure faces downward.

[0044] In some possible implementations, in order to effectively ensure that the U-shaped support 31 can always be fixed to the top cover 2 during hoisting and to avoid the U-shaped support 31 from overturning and becoming unstable during hoisting, the U-shaped support 31 also includes a diagonal brace with one end hinged to the top cover 2 and the other end detachably connected to the support rod 311.

[0045] Furthermore, one end of the diagonal brace is hinged to the top cover 2, and the other end is connected to the support rod 311 when the support rod 311 is set along the Z-axis direction;

[0046] Preferably, the diagonal brace and the support rod 311 are connected by bolts, and the support rod 311 is provided with a lug that is connected to the diagonal brace by bolts.

[0047] In some possible implementations, in order to make the device applicable to the maintenance of pumps 103 of different lengths, the U-shaped frame 312 and the support rod 311 are slidably engaged along the axis of the support rod 311, and the U-shaped frame 312 and the support rod 311 are locked by a locking member;

[0048] Before maintenance, first control the U-shaped support 31 to be perpendicular to the top cover 2, then slide the U-shaped frame 312 along the Z-axis direction, adjust the distance between the lifting device 32 and the pump pool flange cover 102 to ensure that the pump 103 can be taken out from the pump pool 101.

[0049] The locking component is a locking bolt; multiple sets of through holes are provided on the support rod 311 and the U-shaped frame 312 to cooperate with the locking bolt; thus realizing the folding and storage of the support rod 311 and the U-shaped frame 312. When stored, only one set of through holes on the support rod 311 and the U-shaped frame 312 cooperate with each other to connect the support rod 311 and the U-shaped frame 312 through the locking bolt; during inspection and maintenance, at least two sets of through holes on the support rod 311 and the U-shaped frame 312 are connected and fixed to the support rod 311 and the U-shaped frame 312 through the locking bolt. After the connection and fixation, the two will be perpendicular to the plane of the top cover 2.

[0050] In some possible implementations, the U-shaped frame 312 includes connecting rods that correspond one-to-one with the two sets of support rods 311, and a crossbar connected to the end of the two sets of connecting rods away from the support rods 311; the lifting device 32 is mounted on the crossbar.

[0051] Preferably, the lifting device 32 is installed at the center of the crossbar axis; this ensures that the U-shaped support 31 will not overturn or become unstable due to uneven force during lifting.

[0052] In some possible implementations, in order to effectively achieve the telescopic cooperation between the support rod 311 and the connecting rod, the support rod 311 is fitted onto the outside of the connecting rod.

[0053] In some possible implementations, in order to effectively connect and fix the pump pool flange cover 102 with the pump pool flange cover 102 and the pump 103 by means of the lifting device 32, the lifting device 32 is a manual hoist or an electric hoist.

[0054] Furthermore, manual hoists and electric hoists are existing products that can be purchased directly from the market and assembled; their internal structures will not be described in detail here.

[0055] In some possible implementations, a skylight 4 is also included, which is mounted on the top cover 2 and is used to close the receiving cavity 21;

[0056] During inspection and maintenance, first open the skylight 4, then install the lifting device 32 on the U-shaped support 31, unfold the U-shaped support 31 so that it is perpendicular to the top cover 2; after use, store the U-shaped support 31 in the receiving cavity 21, and close the top of the receiving cavity 21 through the skylight 4.

[0057] In some possible implementations, the skylight 4 includes a support frame 41 mounted on the top cover 2 and located above the receiving cavity 21, and a window body 42 hinged to the support frame 41; the support frame 41 has a hollow structure and communicates with the receiving cavity 21.

[0058] Furthermore, one side of the window body 42 is hinged to the support frame 41 via a hinge.

[0059] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A pump crane frame for overhauling LNG submersible pumps, characterized in that, It includes a bracket with an installation cavity, a top cover mounted on the bracket and having a receiving cavity, and a support bracket hinged to the top cover and foldable within the receiving cavity; the receiving cavity communicates with the installation cavity and is located above the installation cavity.

2. The pump frame for overhauling an LNG submersible pump according to claim 1, characterized in that, The support frame has a portal-shaped structure, including a U-shaped support member that is hinged to the top cover, and a lifting device installed on the U-shaped support member and connected to the pump pool flange cover.

3. A pump crane frame for overhauling an LNG submersible pump according to claim 2, characterized in that, The U-shaped support includes two sets of support rods that are arranged opposite each other and hinged to the top cover, and a U-shaped frame that is connected to the two sets of support rods at the end away from the hinge point with the top cover.

4. A pump crane frame for overhauling an LNG submersible pump according to claim 3, characterized in that, The U-shaped support also includes a diagonal brace that is hinged at one end to the top cover and detachably connected to the support rod at the other end.

5. A pump crane frame for overhauling an LNG submersible pump according to claim 3, characterized in that, The U-shaped frame and the support rod slide together along the axis of the support rod, and the U-shaped frame and the support rod are locked together by a locking device.

6. A pump crane frame for overhauling an LNG submersible pump according to claim 3, characterized in that, The U-shaped frame includes connecting rods that correspond one-to-one with the two sets of support rods, and a horizontal bar that is connected to the end of the two sets of connecting rods away from the support rods; the lifting device is installed on the horizontal bar.

7. A pump crane frame for overhauling an LNG submersible pump according to claim 3, characterized in that, The support rod is fitted onto the outside of the connecting rod.

8. A pump crane frame for overhauling an LNG submersible pump according to claim 2, characterized in that, The lifting device is a manual hoist or an electric hoist.

9. A pump crane frame for overhauling an LNG submersible pump according to any one of claims 1-8, characterized in that, It also includes a skylight installed on the top cover to close the receiving cavity.

10. A pump crane frame for overhauling an LNG submersible pump according to claim 9, characterized in that, The skylight includes a support frame mounted on the top cover and located above the receiving cavity, and a window body hinged to the support frame; the support frame has a hollow structure and communicates with the receiving cavity.

Images