A device that facilitates the disassembly and assembly and horizontal transportation of large ball valves of a hydro-turbine generator set

Abstract

The invention discloses a device for facilitating the disassembly and assembly and horizontal transportation of a large ball valve of a hydro-turbine generator set, comprising a hydraulic forklift and a supporting device body fixedly arranged on a lifting tray of the hydraulic forklift; the supporting device body comprises a supporting plate, an additional supporting plate, a V-shaped supporting pipe and a supporting straight pipe; the supporting plate is fixedly arranged on the lifting tray of the hydraulic forklift in a bilaterally symmetrical manner, the additional supporting plate is arranged one-to-one with the supporting plate and is locked and connected with the supporting plate by connecting bolts, and the invention allows both ends of the large ball valve to be firmly stuck on it, thereby improving the stability of the support; by using a hydraulic forklift, only the hydraulic forklift needs to be operated to relieve pressure or increase pressure to realize the descent or ascent of the large ball valve, thereby improving the disassembly and assembly efficiency; by using an additional supporting plate, large ball valves with different diameters and models can also be fixedly supported, thereby improving the flexibility and reliability of the device. It also improves the safety of workers.

Description

Technical Field

[0001] The invention relates to the field of mechanical equipment, in particular to a device which is convenient for disassembling and assembling a large ball valve of a water turbine generator set and for horizontally transporting the same. Background Art

[0002] Ball valves are generally used in pipelines for switching or regulating media. Most of the hydroelectric generator sets have high-pressure and large-diameter pipelines, so most of them use large ball valves with large valve bodies. When large ball valves in the unit need to be replaced or repaired, it is time-consuming and troublesome for some large ball valves installed at a certain height, and there are certain risks. It is troublesome to carry the disassembled large ball valves horizontally.

[0003] The disassembly and assembly of large ball valves of hydro-turbine generator sets and their horizontal transportation usually involve first setting up a scaffolding for hanging a manual hoist, and then hanging the ball valve on the hook at the lower end of the manual hoist with the ends of the slings. The manual hoist can be operated to tighten the ball valve to prevent it from falling during the disassembly process. After the disassembly is completed, the ball valve is first lifted up, and then horizontally shifted to the top of the handling tool by another manual hoist, and then slowly placed on the handling tool, and finally horizontally transported to the designated position; the installation is the opposite. However, it is difficult to fix and support the large ball valve by lifting it with a manual hoist, because the manual hoist needs to be tightened when the ball valve is disassembled, and the ball valve will be in a suspended state and cannot be fixed after the bolts are removed and during the process of lifting the ball valve during installation. Therefore, the ball valve is easily affected by external factors, and thus shakes in the horizontal direction, and may suddenly fall, affecting the work safety of workers. In addition, the traditional method is more troublesome, and it is necessary to set up a scaffolding to hang the manual hoist as a force-bearing body. Therefore, the existing technology has the problem of difficulty in fixing the support during the disassembly and installation of a large ball valve set at a certain height, and there are hidden dangers to the safety of workers during the work process; after disassembly, it needs to be hoisted onto the handling tool, which is a complicated process. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0005] A device for facilitating the disassembly and assembly and horizontal transportation of a large ball valve of a hydro-turbine generator set, comprising a hydraulic forklift and a supporting device body fixedly arranged on a lifting tray of the hydraulic forklift;

[0006] The supporting device body comprises two supporting plates, two additional supporting plates, a plurality of V-shaped supporting tubes and a plurality of supporting straight tubes; the two supporting plates are fixedly arranged on the lifting pallet of the hydraulic forklift in a bilaterally symmetrical manner, the additional supporting plates are arranged one by one corresponding to the supporting plates and are locked and connected with the supporting plates by connecting bolts, wherein the additional supporting plates are fitted on the outer surface of the supporting plates and have a bilaterally symmetrical structure, the bottom edge of the additional supporting plates is in contact with the lifting pallet of the hydraulic forklift, and the supporting plates and the additional supporting plates are respectively provided with matching supporting plate bolt holes and additional supporting plate bolt holes, based on which the purpose of fixing and supporting large ball valves of different diameters and models can be achieved by replacing different additional supporting plates, thereby improving flexibility;

[0007] A plurality of support straight tubes distributed laterally left and right are arranged between the support plates, and the two ends of the support straight tubes are respectively welded to adjacent support plates, and the support plates are connected by the support straight tubes to form a support structure of a certain foundation; a V-shaped support tube is also arranged between the support plates, and the V-shaped support tube is located above the support straight tube, and the two sides of the upper end of the V-shaped support tube are respectively welded to the adjacent support plates, and the lower end is welded to the adjacent support straight tube, and the V-shaped support tubes are arranged at a front-to-back interval, and the opening of the V-shaped support tube is arranged upward, and a triangular support structure is formed between the V-shaped support tube and the support plate and the support straight tube, thereby improving the overall support strength, and at the same time, the V-shaped groove structure of the V-shaped support tube can play the role of limiting the release of the ball valve assembly, avoiding shaking during disassembly, assembly and transportation, and can also allow the lower part of the large ball valve body to drop between the support plate and the support tube, so that the arc-shaped notch of the support plate can limit the position of the straight pipe sections at both ends of the large ball valve;

[0008] The top edges of the support plate and the additional support plate are respectively formed with arc-shaped concave support plate arc grooves and additional support plate arc grooves. Based on the support plate arc grooves and the additional support plate arc grooves, the straight pipe sections at both ends of the large ball valve are restricted in position, which can reduce shaking and displacement during disassembly, assembly and transportation.

[0009] As a further solution of the present invention: the top edges of the support plate and the additional support plate are respectively formed with arc-shaped concave support plate arc grooves and additional support plate arc grooves, based on the support plate arc grooves and the additional support plate arc grooves, the large ball valve pipeline and the valve body connecting part are restricted in position, which can reduce shaking and displacement during disassembly, assembly and transportation.

[0010] As a further solution of the present invention: the support plate and the additional support plate are both in an isosceles trapezoidal structure with a bottom angle of 60°.

[0011] Beneficial effects of the invention: The invention allows both ends of the large ball valve to be firmly stuck on it, thus improving the stability of the support; using a hydraulic forklift, only the hydraulic forklift needs to be operated to release or increase pressure to achieve the lowering or raising of the large ball valve, thereby improving the efficiency of disassembly and assembly; using an additional support plate, large ball valves of different diameters and models can also be fixed and supported, thereby improving the flexibility and reliability of the device. It also improves the safety of workers.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a structural stereogram of the present invention;

[0015] Figure 2 It is a side view of the present invention.

[0016] Figure 3 It is a top view of the present invention.

[0017] Figure 4 It is a structural schematic diagram of the main body of the supporting device in the present invention.

[0018] Figure 5 It is a top view of the main body of the supporting device in the present invention.

[0019] Figure 6 It is a structural schematic diagram of the support plate in the present invention.

[0020] Figure 7 It is a structural schematic diagram of the additional support plate in the present invention.

[0021] Figure 8 It is the use effect diagram of the present invention.

[0022] In the figure: 1-hydraulic forklift, 2-support plate, 3-additional support plate, 4-V-shaped support pipe, 5-connecting bolt, 6-support straight pipe, 7-support plate arc notch, 8-support plate bolt hole, 9-additional support plate arc notch, 10-additional support plate bolt hole, 11-ball valve, 12-tube body, 13-support device body. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figures 1 to 7 In an embodiment of the present invention, a device for facilitating the disassembly and assembly and horizontal transportation of a large ball valve of a hydro-turbine generator set includes a hydraulic forklift 1 and a supporting device body 13 fixedly arranged on a lifting pallet of the hydraulic forklift 1;

[0025] The supporting device body 13 includes two supporting plates 2, two additional supporting plates 3, a plurality of V-shaped supporting tubes 4 and a plurality of supporting straight tubes 6; the two supporting plates 2 are fixedly arranged on the lifting pallet of the hydraulic forklift 1 in a bilaterally symmetrical manner, the additional supporting plates 3 are arranged one by one with the supporting plates 2 and are locked and connected with the supporting plates 2 by connecting bolts 5, wherein the additional supporting plates 3 are fitted on the outer surface of the supporting plates 2 and have a bilaterally symmetrical structure, thereby improving the flexibility of the supporting device body 13, and the supporting plates 2 and the additional supporting plates 3 are respectively provided with supporting plate bolt holes 8 and additional supporting plate bolt holes 10 arranged in a matching manner;

[0026] A plurality of support straight tubes 6 distributed laterally left and right are arranged between the support plates 2, and the two ends of the support straight tubes 6 are respectively welded to the adjacent support plates 2, and the support plates 2 are connected by the support straight tubes 6 to form a support structure of a certain foundation; a V-shaped support tube 4 is also arranged between the support plates 2, and the V-shaped support tube 4 is located above the support straight tube 6. The two sides of the upper end of the V-shaped support tube 4 are respectively welded to the adjacent support plates 2, and the lower end is welded to the adjacent support straight tube 6. The V-shaped support tubes 4 are arranged at a front-to-back interval, and the opening of the V-shaped support tube 4 is arranged upward, and a triangular support structure is formed between the V-shaped support tube 4 and the support plate 2 and the support straight tube 6, thereby improving the overall support strength. At the same time, the V-shaped groove structure formed by the V-shaped support tube 4 can play a role in limiting the release of the ball valve assembly, avoiding shaking during disassembly, assembly and transportation, and allowing the lower part of the large ball valve body to drop between the support plate and the support tube, so that the arc-shaped notch of the support plate can limit the position of the straight pipe sections at both ends of the large ball valve.

[0027] The top edges of the support plate 2 and the additional support plate 3 are respectively formed with an arc-shaped concave support plate arc groove 7 and an additional support plate arc groove 9. Based on the support plate arc groove 7 and the additional support plate arc groove 9, the straight pipe sections at both ends of the large ball valve are restricted in position, which can reduce shaking and displacement during disassembly, assembly and transportation.

[0028] The number of the supporting straight tubes 6 is at least two rows and three columns, wherein the number of the supporting straight tubes 6 in each column is not less than 2.

[0029] The supporting straight tube 6 and the V-shaped supporting tube 4 are both made of steel tube material.

[0030] The support plate 2 and the additional support plate 3 are both isosceles trapezoidal structures with a bottom angle of 60°.

[0031] The working principle of the present invention is: please refer to Figure 8 When a large ball valve of a hydroelectric generator set needs to be replaced or repaired, the special tool of the present invention is moved to the bottom of the large ball valve, the position is initially adjusted, and the hydraulic forklift 1 is manually adjusted to rise so that the supporting device body 13 just contacts the large ball valve. At this time, fine adjustment is performed so that the upper end of the supporting plate can just clamp the large ball valve 11, and then the manual hydraulic forklift is operated to continue to rise to support the large ball valve 11 stably and firmly, and finally the large ball valve is disassembled and repaired. After the disassembly is completed, the worker operates the hydraulic forklift to relieve the pressure, and the large ball valve and the special tool are slowly lowered by their own weight, and then the worker can pull the hydraulic forklift to carry the large ball valve; when the large ball valve needs to be fixedly supported and installed, the worker transports the large ball valve to the installation position through the special tool of the present design, and the worker operates the hydraulic forklift to pressurize the large ball valve to rise to a suitable position. After the installation is completed, the worker operates the hydraulic forklift to relieve the pressure, and the special tool is slowly lowered by its own weight. At this time, the special tool can be withdrawn, and the installation work is completed.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A device for facilitating the disassembly and assembly and horizontal transportation of a large ball valve of a hydro-turbine generator set, characterized in that: It includes a hydraulic forklift and a supporting device body fixedly arranged on a lifting pallet of the hydraulic forklift; The supporting device body comprises a supporting plate, an additional supporting plate, a V-shaped supporting tube and a supporting straight tube; the supporting plate is fixedly arranged on the lifting pallet of the hydraulic forklift in a bilaterally symmetrical manner, the additional supporting plate is arranged one-to-one with the supporting plate and is locked and connected with the supporting plate by connecting bolts, wherein the additional supporting plate is fitted on the outer surface of the supporting plate and has a bilaterally symmetrical structure; A plurality of support straight tubes are arranged between the support plates, and the two ends of the support straight tubes are respectively welded to the adjacent support plates. A V-shaped support tube is also arranged between the support plates, and the opening of the V-shaped support tube is arranged upward, and the upper ends of the V-shaped support tubes are respectively welded to the adjacent support plates, and the lower ends are welded to the adjacent support straight tubes, and a triangular support structure is formed between the V-shaped support tube and the support plate and the support straight tube, and the V-shaped support tube forms a V-shaped groove structure; The top edges of the support plate and the additional support plate are respectively formed with arc-shaped concave support plate arc-shaped notches and additional support plate arc-shaped notches; The top edges of the support plate and the additional support plate are respectively formed with arc-shaped concave support plate arc notches and additional support plate arc notches, based on which the straight pipe sections at both ends of the large ball valve are clamped and restricted, which can reduce shaking and displacement during disassembly, assembly and transportation; The V-shaped support pipe is located above the support straight pipe.

2. The device for facilitating the disassembly and assembly and horizontal transportation of a large ball valve of a hydro-generator set according to claim 1 is characterized in that: The support plate and the additional support plate are both in an isosceles trapezoidal structure with a bottom angle of 60°.

3. The device for facilitating the disassembly and assembly and horizontal transportation of a large ball valve of a hydro-generator set according to claim 1 is characterized in that: The support plate and the additional support plate are respectively provided with supporting plate bolt holes and additional support plate bolt holes that are matched with each other.

4. The device for facilitating the disassembly and assembly and horizontal transportation of a large ball valve of a hydro-generator set according to claim 1 is characterized in that: The bottom edge of the additional support plate contacts the lifting pallet of the hydraulic forklift.

5. The device for facilitating the disassembly and assembly and horizontal transportation of a large ball valve of a hydro-generator set according to claim 1 is characterized in that: The V-shaped support tubes are arranged with a front-to-back interval.

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