Forced circulation hot water pump hydraulic internal part hoisting tool

Abstract

The utility model discloses a hoisting tool for a hydraulic internal part of a forced circulation hot water pump, relates to the technical field of hoisting tools, and solves the technical problems that the hoisting tool in the prior art is not suitable for hoisting in the air and cannot be quickly mounted, the hoisting tool comprises a support truss, a hoisting rope is arranged on the support truss, and the lower end of the hoisting rope is connected with a hoisting cross beam; the overhead hoisting device is specially designed for overhead operation, the problem that in the prior art, rapid overhead hoisting cannot be carried out can be effectively solved, and the installation flexibility is improved; the supporting truss is made of a high-strength and low-density titanium alloy material, so that the dead weight of the tool is greatly reduced, the operation and transportation are convenient, and meanwhile, the tool can be conveniently folded and stored; by designing the crossed arrangement of the supporting trusses in the pump shell suction pipe, the hoisting process is direct and rapid, people can easily operate on the maintenance platform, and the labor and time cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hoisting tools, specifically a hoisting tool for the hydraulic internal components of a forced circulation hot water pump. Background Technology

[0002] The technical field of this utility model relates to forced circulation hot water pumps, which are mainly used in absolutely sealed systems for high-temperature and high-pressure media, such as subcritical controlled circulation boilers, ultra-supercritical boilers, and waste heat boilers in catalytic cracking units of oil refineries. These systems become the core equipment of boiler hot water circulation systems by providing zero-pressure-difference boiler water circulation power, and the medium they transport is saturated water at temperatures up to 320°C.

[0003] The pump body features a vertically upward suction pipe and two discharge pipes symmetrically arranged at a 65° angle upwards. The pump unit is suspended in the air without any support. Due to the high temperature and pressure environment, the inlet and outlet pipelines are connected to the circulating pump by welding. The pump casing is vertically welded to the boiler's downcomer pipe. After welding, radiographic inspection, slag removal, and acid washing and hydrostatic testing along with the boiler system are required. Therefore, the internal hydraulic components such as the bell pipe and sealing rings can only be installed after the pump casing is welded.

[0004] Considering the large size and weight of the hydraulic components, and the fact that installation involves working at heights, specialized hoisting tools must be used for successful installation. This invention introduces a hoisting tool that can be operated by a hand-operated hoist, suitable for working at heights, convenient, quick, and labor-saving, thereby significantly improving the efficiency of installation and maintenance.

[0005] Existing technologies have technical problems that make them unsuitable for aerial hoisting and cannot be installed quickly. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this utility model provides a hoisting tool for the hydraulic internal components of a forced circulation hot water pump, which solves the technical problem that existing technologies are unsuitable for aerial hoisting and cannot be installed quickly.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic internal component hoisting tool for a forced circulation hot water pump, comprising a support truss, a hoisting rope on the support truss, a hoisting beam connected to the lower end of the hoisting rope, and a hand-operated hoist between the support truss and the hoisting rope. The support truss is composed of two high-strength, low-density titanium alloy rectangular tubes, which are lightweight and easy to fold and install inside the pump casing's suction pipe. A person stands on the maintenance platform and manually inserts the support truss into the pump casing's suction pipe. Then, the two supports are arranged perpendicularly and crosswise on the inner wall of the pump casing's suction pipe. The four support surfaces of the support truss are made into inclined planes, with the inclination consistent with the taper of the pump casing.

[0008] Preferably, the supporting truss is composed of a pair of rectangular straight tubes rotatably connected at the midpoint. A pair of lifting nuts are provided at the upper center of the supporting truss, and a lifting ring is provided at the lower end of the supporting truss. A threaded rod is provided at the upper end of the lifting ring, and the threaded rod is connected to the pair of lifting nuts. The double lifting nut design can play a role in preventing loosening.

[0009] Preferably, the upper end of the lifting beam is provided with four lifting bolts, the lifting rope is installed on the four lifting bolts, the lower end of the hand-operated hoist is connected to the upper end of the lifting rope, and the upper end of the hand-operated hoist is connected to the lifting ring. The rated load capacity of the hand-operated hoist needs to be greater than 1.5 times the weight of each part, and the lifting height needs to be greater than the height of the part from the platform. A person on the maintenance platform can easily use the hand-operated hoist to lift the inlet horn to the required height.

[0010] Beneficial effects

[0011] This utility model provides a lifting tool for the hydraulic internals of a forced circulation hot water pump. Specifically designed for high-altitude operations, it effectively solves the problem of rapid aerial hoisting in existing technologies, improving installation flexibility. The support truss is made of high-strength, low-density titanium alloy, significantly reducing the tool's weight, facilitating operation and transportation, and allowing for easy folding and storage. The cross-arrangement of the support truss within the pump casing's suction pipe enables a direct and rapid hoisting process, allowing for easy operation from a maintenance platform, reducing labor and time costs. Using this tool also makes the disassembly and assembly of hydraulic components such as the horn pipe and sealing rings within the pump faster and more convenient, significantly improving on-site installation and maintenance efficiency. The tool's simple design and reasonable structure allow it to adapt to various models and specifications of forced circulation hot water pumps, making it suitable for a wide range of applications. Attached Figure Description

[0012] Figure 1 This is a front view sectional view of the lifting tool for the hydraulic internal components of a forced circulation hot water pump according to the present invention.

[0013] Figure 2 This is a schematic diagram of the support truss structure of the hydraulic internal components hoisting tool for a forced circulation hot water pump according to the present invention.

[0014] Figure 3 This is a schematic diagram of the support truss structure of the hydraulic internal components hoisting tool for a forced circulation hot water pump according to the present invention.

[0015] Figure 4 This is a schematic diagram of the lifting beam structure of a hydraulic internal component hoisting tool for a forced circulation hot water pump according to the present invention.

[0016] Figure 5This is a schematic diagram of the lifting beam structure of a hydraulic internal component hoisting tool for a forced circulation hot water pump according to the present invention.

[0017] In the diagram: 1. Support truss; 2. Lifting ring; 3. Lifting nut; 4. Hand chain hoist; 5. Lifting beam; 6. Lifting bolt; 7. Suction horn pipe; 9. Lifting rope; Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Detailed description follows.

[0019] Please see Figure 1-5 This utility model provides a technical solution: a hydraulic internal component hoisting tool for a forced circulation hot water pump, including a support truss 1, a hoisting rope 9 on the support truss 1, a hoisting beam 5 connected to the lower end of the hoisting rope 9, and a hand-operated hoist 4 between the support truss 1 and the hoisting rope 9. The support truss 1 is composed of two high-strength, low-density titanium alloy rectangular tubes, which are lightweight and easy to fold and install inside the suction pipe of the pump casing. A person stands on the maintenance platform and manually inserts the support truss 1 into the suction pipe of the pump casing. Then, the two supports are arranged vertically and crosswise on the inner wall of the suction pipe of the pump casing. The four support surfaces of the support truss 1 are made into inclined planes with the inclination consistent with the taper of the pump casing.

[0020] In this embodiment, the supporting truss 1 is further configured to be composed of a pair of rectangular straight tubes rotatably connected at the midpoint. A pair of lifting nuts 3 are provided at the upper center of the supporting truss 1, and a lifting ring 2 is provided at the lower end of the supporting truss 1. A threaded rod is provided at the upper end of the lifting ring 2, and the threaded rod is connected to the pair of lifting nuts 3. The double lifting nut 3 design can play a role in preventing loosening.

[0021] In this embodiment, four lifting screws 6 are provided on the upper end of the lifting beam 5, the lifting rope 9 is installed on the four lifting screws 6, the lower end of the hand chain hoist 4 is connected to the upper end of the lifting rope 9, and the upper end of the hand chain hoist 4 is connected to the lifting ring 2. The rated load capacity of the hand chain hoist 4 needs to be greater than 1.5 times the weight of each part, and the lifting height needs to be greater than the height of the part from the platform. A person on the maintenance platform can easily use the hand chain hoist 4 to lift the inlet horn to the required height.

[0022] Its detailed connection methods are well-known technologies in this field; such as Figure 1-5As shown, the specific method of using the hydraulic internal components hoisting tool of this utility model for forced circulation hot water pump is as follows: Check whether the support truss 1, hand chain hoist 4, hoisting rope 9 and each connecting part are intact, and ensure that there is no damage or corrosion; ensure that the rated load capacity of the hand chain hoist 4 is suitable for the hydraulic internal components to be hoisted; ensure that there are no obstacles in the work area, keep the passage unobstructed, and ensure that the installation and maintenance platform is stable and safe; verify the specific situation of the pump casing internal components that need to be repaired or installed, and confirm the hoisting position and height.

[0023] Fold the support truss 1 to a parallel position to facilitate smooth insertion through the pump casing's suction pipe; stand on the maintenance platform and manually insert the support truss 1 into the pump casing's suction pipe; once the support truss 1 is inside the pump casing's suction pipe, unfold the bottom ends of the two supports so that they are vertically crossed and fixed to the inner wall of the pump casing; connect the two supports using lifting eye bolts and nuts to ensure the support is stable and can withstand the lifting load; secure the lifting rope 9 with the lifting screws 6 set on the lifting beam 5; hook the upper hook of the hand chain hoist 4 onto the lifting eye bolt 2 below the new support truss 1, ensuring a secure connection; suspend the hydraulic internal components to be installed (such as the suction horn) on the lower hook of the hand chain hoist 4; operate the hand chain hoist 4, and a person on the maintenance platform can easily use the hand chain hoist 4 to lift the suction horn to the required height.

[0024] By following the steps above, the hydraulic internal components of a forced circulation hot water pump can be installed and repaired efficiently and safely using the hydraulic internal components hoisting tools.

[0025] It should be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0026] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A hoisting tool for hydraulic internals of a forced circulation hot water pump, comprising a support truss (1), characterized in that, A hoisting rope (9) is provided on the supporting truss (1), and a lifting beam (5) is connected to the lower end of the hoisting rope (9). A hand-operated hoist (4) is provided between the supporting truss (1) and the hoisting rope (9).

2. The hydraulic internal components hoisting tool for a forced circulation hot water pump according to claim 1, characterized in that... The supporting truss (1) is composed of a pair of rectangular straight tubes connected by rotation at the midpoint. A pair of lifting nuts (3) are provided at the upper center of the supporting truss (1). A lifting ring (2) is provided at the lower end of the supporting truss (1). A threaded rod is provided at the upper end of the lifting ring (2). The threaded rod is connected to the pair of lifting nuts (3).

3. The hydraulic internal components hoisting tool for a forced circulation hot water pump according to claim 2, characterized in that... The upper end of the lifting beam (5) is provided with four lifting screws (6), the lifting rope (9) is installed on the four lifting screws (6), the lower end of the hand chain hoist (4) is connected to the upper end of the lifting rope (9), and the upper end of the hand chain hoist (4) is connected to the lifting ring (2).

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